One of the primary functions of RNA molecules is to function in the synthesis of proteins.
What is proteins?Proteins are large, complex molecules that are essential for the structure, function, and regulation of the body’s cells, tissues, and organs. They are made up of amino acids, which are the building blocks of proteins. Proteins are found in all living organisms, including animals, plants, and microorganisms, and they play a number of important roles in the body. They act as enzymes, hormones, and antibodies, and they provide structure and support to cells and tissues. They are also important for the transport of molecules within the cell and for the regulation of metabolic processes. Additionally, proteins are necessary for energy production, as well as for the growth and repair of cells and tissues. They also play a role in the development and functioning of the immune system.
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What organelles are theorized to have evolved through endosymbiosis?
Select all that apply.
Golgi complex
Mitochondria
Endoplasmic reticulum
Chloroplasts
Answer:
I believe it's Mitochondrion and Chloroplasts.
Explanation:
Endosymbiosis says that prokaryotes evolved into eukaryotes, and the mitochondria and chloroplasts both were once free living and share a lot in common with prokaryotic cells.
ANSWER :
MITROCHONDRIA AND CHLOROPLASTS
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fat mobilization is the breakdown of fats in adipose tissue into metabolic products that enter the bloodstream. place the steps of fat mobilization in order. you will not use all of the steps, as some steps have incorrect information.
The steps of fat mobilization in correct order are: (1) body releases epinephrine ; (2) epinephrine binds to fat cells in adipose tissue; (3) triacylglycerols (triglycerides) are hydrolyzed to glycerol and fatty acids; (4) metabolic products enter the bloodstream.
Fat mobilization is the process that occurs during the times of stress when the body needs excessive energy. The fats deposited in the adipose tissues is broken down and mobilized into the body.
Adipose tissues are the connective tissues present all over the body. These tissues are generally referred as the body fat because all the fat deposition takes place in these tissues.
The given question was incomplete, and therefore has been answered in a general way.
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the number and arrangement of flagella can be different for different microorganisms. for instance, flagella arrangement can be described as amphitrichous, monotrichous, peritrichous, lophotrichous, or polar. categorize the phrases and items below as instances of each arrangement.
The categorization of the phrases and items based on the different types of flagellar arrangements is Amphitrichous, lophotrichous and peritrichous.
Amphitrichous: A microorganism with a single flagellum at each pole of the cell.
Lophotrichous: A microorganism with multiple flagella concentrated at one end of the cell.
Peritrichous: A microorganism with multiple flagella distributed evenly around the cell surface.
Lophotrichous and amphitrichous arrangements are the types of polar arrangement, with flagella at one or both ends of the cell, respectively. Peritrichous arrangement, on the other hand, will shows flagella extending from all over the cell.
Despite the different possibilities of flagellar as well as archaellar arrangements, they all function primarily to propel a microorganism through its environment to reach nutrients or the other similar microorganisms.
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--The given question is incomplete, the complete question is
"The number and arrangement of flagella can be different for different microorganisms. for instance, flagella arrangement can be described as Amphitrichous, monotrichous, peritrichous, lophotrichous, or polar. categorize the phrases and items below as instances of each arrangement."--
________ _________ ________ is defined as the process of controlling agricultural pests by using natural predators, parasites, or pathogens.
Biological Pest Management is defined as the process of controlling agricultural pests by using natural predators, parasites, or pathogens.
The use of other creatures to control pests like insects, mites, weeds, and plant diseases is known as biological control or biocontrol. Predation, parasitism, herbivory, or other natural mechanisms are used, although often active human management is also present. It might be a crucial element of programs for integrated pest management (IPM).
For biological pest control, there are three main approaches: classical (importation), which involves introducing a pest's natural enemy in the hopes of gaining control; inductive (augmentation), which involves introducing a large population of natural enemies for prompt pest control; and inoculative (conservation), which involves taking steps to preserve natural enemies through routine reestablishment.
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Which statement shows why lethal genes can be maintained within a gene pool.
Question 8 options:
they can be passed on as recessive trait in a heterozygous individual
they are expressed before the individual reaches the age of reproduction
they are always dominant
they are only expressed in the female organism
Explanation:
They can be passed on as a recessive trait in a heterozygous individual. Lethal genes are not always expressed in an individual, but can still be passed down from generation to generation in the form of a recessive trait in a heterozygous individual. This means that a person can carry the gene and pass it down to their offspring, even if they don't show any signs of the gene's expression. As long as the lethal gene is paired with another dominant gene, it can be passed on and remain in a gene pool.
Species are classified based on their characteristics. Which characteristic identifies two organisms as members of one species?
when will you have the most brain cells you will ever have? please choose the correct answer from the following choices, and then select the submit answer button. A) after puberty B) at birth C) in middle adulthood D) at conception
The most amount of brain cells that a person could aquire will be in the puberty stage; hence the option A.
What factors affect the amount of brain cells?It is difficult to say exactly when a person will have the most brain cells they will ever have, as the number of brain cells can change throughout a person's life due to various factors such as injury, disease, and aging. However, it is generally believed that the number of brain cells peaks during early childhood and then decreases over time. Some research suggests that the brain may continue to produce new neurons, or brain cells, throughout adulthood, but this process may decline with age. So, the answer is A) after puberty.
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Answer: BIRTH
Explanation: Birth is the correct answer
For phosphorus to be available to a consumer, which of the following must happen?
Question 22 options:
soil bacteria must make ammonia
phosphorus must be released from weathering of rocks
consumers have to convert carbon dioxide to sugar
producers must capture phosphorus from the atmosphere
For phosphorus to be available to a consumer, producers must capture phosphorus from the atmosphere.
What are the functions of phosphorus?Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive,.
Phosphorus is needed for the growth, maintenance, and repair of all tissues and cells, and for the production of the genetic building blocks, DNA and RNA. Phosphorus is also needed to help balance and use other vitamins and minerals, including vitamin D, iodine, magnesium, and zinc.
Phosphate is necessary for the formation of bone and teeth. Phosphate is also used as a building block for several important substances, including those used by the cell for energy, cell membranes, and DNA.
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why does a heat pack produce heat ? why is it exothermic?
Answer:
Explanation: A heat pack contains a mixture of chemicals that undergo an exothermic reaction when exposed to air or water. The reaction is typically initiated by breaking a capsule or squeezing the pack, which mixes the chemicals and starts the reaction.
The exothermic reaction produces heat as a byproduct, which is why the heat pack gets warm. The reaction is typically between iron powder and an oxidizing agent, such as activated carbon or vermiculite. When the oxidizing agent is exposed to air or water, it releases oxygen, which reacts with the iron powder to produce iron oxide and heat.
The reaction is exothermic because it releases heat to the surroundings. Exothermic reactions are characterized by a negative change in enthalpy, which means that the reactants have a higher energy level than the products. In the case of a heat pack, the reaction releases heat energy, which is transferred to the surroundings, making the pack warm.
Based on its function in detoxifying drugs, you would expect to find a large amount of smooth Endoplasmic Reticulum in ______ cells.
A brain
B lung
C liver
D intestinal
C liver. In the liver cells of vertebrates, the smooth endoplasmic reticulum aids in the detoxification of medicines and toxins.
It has enzymes that can catalyse a number of processes that turn medications and metabolic wastes that are lipid-soluble into water-soluble substances that can be easily excreted from the body. The generation of lipids and the removal of medications and poisons from the body are predominantly handled by the smooth endoplasmic reticulum. Large levels of smooth ER are present in liver cells, and one of these proteins' primary jobs is to detoxify waste products from normal metabolism as well as excessive amounts of ethanol from excessive alcohol use and barbiturates from drug overdoses.
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dividing the body into nine regions help anatomists to precisely describe the location and orientation of internal organs. True or False
It is true as dividing the body into nine regions, such as the axial and appendicular regions, helps anatomists to precisely describe the location and orientation of internal organs.
What is organ?An organ system is a biological system made up of a collection of organs that collaborate to accomplish one or more activities. Each organ in a plant or animal body serves a specific function and is made up of various tissues. The respiratory system, digestive and excretory system, circulatory system, urinary system, integumentary system, skeletal system, muscular system, endocrine system, lymphatic system, neurological system, and reproductive systems are among the 11 organ systems. Other systems in the body that are not organ systems exist.
Here,
This helps to provide a clear and standardized method for communication between medical professionals, making it easier to accurately diagnose and treat conditions affecting the body.
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Nasal sounds are produced by lowering the ________ to the base of the tongue, which closes the oral cavity and allows air (voice) to be directed into the nasal passages.
The velum, also known as the soft palate, regulates airflow in the nasal cavity. By letting air escape via the nose while lowering the velum, nasals and nasalized sounds are generated.
How are nasal sounds made?By obstructing sounds coming from the mouth with the lips or tongue, the nasal sounds m, n, and ng are produced. The air is then completely ejected through the nose. Nasal sounds are those made when air is exhaled simultaneously from the nose and mouth.
Where do nasal sounds come from?In phonetics, a nasal sound is one in which the soft palate (velum) at the rear of the mouth is lowered, causing the airstream to enter into the nose.
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Mary's dumpster-diving study of the waste stream at the student union was part of her thesis project in Environmental
Education. She discovered that the material from the compost bins was contaminated with inorganic trash. It was being taken to
the landfill and not composted.
Mary started a marketing campaign to improve how the union informed customers what should go into the compost, landfill,
and recycling bins. She urged the union to change to different packaging materials.
Mary inventoried the waste containers two times. There was a lot more work to do to educate and encourage students and
facility managers to adopt sustainable practices.
This essay would benefit from transitional words and phrases. Choose the option below that uses transitions most effectively.
Mary's dumpster-diving study of the waste stream at the student union was part of her thesis project in Environmental Education.
What is Environmental Education?Environmental Education (EE) is an educational approach that promotes the understanding of the environment and the interconnections between people and the natural world. It is a way of learning about environmental issues and exploring solutions for environmental problems.
Furthermore, she discovered that the material from the compost bins was contaminated with inorganic trash, which was being taken to the landfill and not composted. In response, Mary started a marketing campaign to improve how the union informed customers what should go into the compost, landfill, and recycling bins. Additionally, she urged the union to change to different packaging materials. To better understand the issue, Mary inventoried the waste containers two times. Despite her efforts, there was still a lot more work to do to educate and encourage students and facility managers to adopt sustainable practices.
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at ph 6, hemoglobin would have a (choose: higher/lower/identical) p50 value for oxygen compared to hemoglobin at ph 7.2
At pH 6, hemoglobin would have a lower p50 value for oxygen compared to hemoglobin at pH 7.2.
The p50 value of hemoglobin is a measure of its affinity for oxygen, or how easily it binds to and releases oxygen. The p50 value is dependent on the pH of the surrounding environment, as well as the temperature, concentration of oxygen and other factors. In general, as the pH decreases, the p50 value of hemoglobin also decreases, meaning that it binds to oxygen more readily. This relationship is due to the fact that changes in pH affect the charge state of the hemoglobin molecules, altering the strength of the bonds between hemoglobin and oxygen. At a lower pH, the hemoglobin molecules have a greater charge, making them more likely to bind to oxygen.In conclusion, at pH 6, hemoglobin would have a lower p50 value for oxygen compared to hemoglobin at pH 7.2, meaning that it would bind to oxygen more easily at a lower pH.
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A student runs an experiment to figure out if the size of a wire changes how well it conducts electricity. She uses 5 different widths of copper wire and attaches each to a multimeter to measure the resistance in the wires. The data collected is shown below
Wire 1- 12 Ohms
Wire 2-17 Ohms
Wire 3-9 Ohms
Wire 4-14 Ohms
Wire 5-6 Ohms
What is the control in this experiment?
A. All of these
B. The resistances that were measured.
C. The widths of the wires.
D. The wires are all copper.
The control in an experiment is the standard against which the results of the experimental group are compared. In this case, the control group would be the standard condition that the student uses as a reference point for comparison with the other groups. Based on the information provided, it is not clear what the student used as a control group. However, option B, "the resistances that were measured," is not the control group because it is the dependent variable being measured and not the control.
Option C, "the widths of the wires," is a possible choice for the control because it is the independent variable that is being manipulated to test its effect on the dependent variable (resistance). Option D, "the wires are all copper," could also be considered as a possible control because it ensures that the material properties of the wires are consistent across all groups, eliminating any potential material-related confounding variables. Therefore, the best answer is A, "All of these," as all of these factors may have contributed to serving as the control in this experiment.
neurotransmitters bind to receptors located on the , which is/are primarily responsible for receiving information from other neurons.
neurotransmitters bind to receptors located on the , dendrites are primarily responsible for receiving information from other neurons.
Do neurotransmitters connect to dendritic receptors?Neurotransmitters connect to postsynaptic receptors on dendrites after passing through the synapse and produce either an excitatory or inhibitory response.
The protein to which the neurotransmitter attaches in this case—the neurotransmitter receptor—is not an ion channel. Signaling via metabotropic receptors is dependent on the activation of multiple molecules within the cell and frequently requires a second messenger route.
The presynaptic neuron emits a substance (a neurotransmitter) that is recognised by the postsynaptic neuron's specialised proteins known as neurotransmitter receptors.
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The following lead to variation except for
A.
natural selection
B.
mutation
C.
sexual reproduction
D.
speciation
Answer:
The correct answer is A - natural selection. Natural selection is a process that grants survival advantages to certain individuals in a population, but does not lead to variations within a species. Variations are caused by mutation, sexual reproduction, and speciation, which are all processes involving genetic changes.
Define the various changes of state and which ones are endothermic and exothermic and why?
Changes of state refer to the processes that occur when matter undergoes a transition from one physical state to another. There are several changes of state, and each involves a specific type of transition, which can be either endothermic or exothermic.
1. Melting: Melting is the process of changing a substance from a solid to a liquid state, and it is endothermic because energy is absorbed during the process.
2. Freezing: Freezing is the process of changing a substance from a liquid to a solid state, and it is exothermic because energy is released during the process.
3. Vaporization: Vaporization is the process of changing a substance from a liquid to a gas state, and it can be either endothermic or exothermic. If the vaporization occurs at a constant temperature, it is endothermic (e.g. boiling water). If the vaporization occurs at a constant pressure, it is exothermic (e.g. evaporation of sweat from our skin).
4. Condensation: Condensation is the process of changing a substance from a gas to a liquid state, and it is exothermic because energy is released during the process.
5. Sublimation: Sublimation is the process of changing a substance from a solid directly to a gas without passing through a liquid state, and it is endothermic because energy is absorbed during the process.
6. Deposition: Deposition is the process of changing a substance from a gas directly to a solid without passing through a liquid state, and it is exothermic because energy is released during the process.
The endothermic or exothermic nature of a change of state depends on the amount of energy required to break the intermolecular forces between the particles. For example, melting requires energy to break the intermolecular bonds between particles, and this makes it an endothermic process. On the other hand, freezing releases energy as particles come together to form a solid, and this makes it an exothermic process. Similarly, vaporization is endothermic because energy is required to break the bonds between the particles in the liquid, whereas condensation is exothermic because energy is released as particles come together to form a liquid.
Lack of insulin causes.
a. Goiter
b. Anemia
c. Diabetes
d. Rickets
c. diabetes
..................
The type of mount in which a specimen is prepared for optical microscopy is dependent upon which of the following?-The condition of the specimen-The aims of the examiner-The type of microscopy available
All three factors you mentioned play a role in determining the type of mount used in optical microscopy. The condition of the specimen, The aims of the examiner, The type of microscopy available.
What is the role of the factors in determining the type of mount?The condition of the specimen: If the specimen is delicate, soft, or easily damaged, a special type of mount may be necessary to protect it during observation. For example, a liquid mount may be used to suspend a delicate specimen in a fluid, while a resin mount may be used to embed and stabilize a specimen.
The aims of the examiner: The type of mount used can also depend on the specific research questions or observations that the examiner hopes to make. For example, a particular mount may be better suited for observing surface details, while another may be better for observing internal structures.
The type of microscopy available: The type of microscope being used can also determine the type of mount that is used. Some microscopes are designed to work best with specific types of mounts, and certain mounts may not be compatible with certain microscopes.
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Sometimes, a gene that is beneficial to the survival of an organism is gradually lost from the gene pool of a population. What causes this?
Genetic drift is the random variation in the frequency of an existing gene variant in a population.
What is genetic drift?Genetic drift, as well known as allelic drift or the Wright effect, is the random variation in the frequency of an existing gene variant in a population. Genetic drift can cause gene variants to vanish completely, reducing genetic variation.Genetic drift can cause gene variants to vanish completely, reducing genetic variation. It also cause previously rare alleles to become more and more common, and even fixed.Genetic drift seems to be a random process that can cause large population changes in a short period of time. Random drift is caused by recurring small population sizes, severe population reductions known as "bottlenecks," and founder events in which a new population begins with a small number of individuals.To learn more about genetic drift refer to :
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When water molecules are attracted to other water molecules we call this __
Which of the following enzymes is responsible for substrate recognition in the ubiquitin-proteasome pathway? A. E1 B. E2 C. E3 D. E4
In the ubiquitin-proteasome pathway, E3 enzymes are in charge of recognizing the substrate.
The ubiquitin-proteasome pathway: what is it?One of the main pathways for controlling protein activity degradation is the ubiquitin-proteasome pathway (UPP). By performing these specific tasks, the UPP controls the quality of the proteins in cells by removing damaged or misfolded proteins via the proteasome.
Defects in UPP are therefore predicted to interfere with cellular homeostasis and be harmful to cell viability. Proteins that have been post-translationally marked with ubiquitin (Ub) or numerous ubiquitin molecules connected to a lysine side chain are known as UPP proteins, which function as the main negative regulatory mechanism.
The 26S proteasome uses the Ub as a recognition signal, and proteins modified with the Ub are transported to the 26S proteasome where specific receptors start the breakdown process.
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The protein product derived from the DNA sequence below contains which of the following amino acid sequences?
DNA: 3' TACTTTCGCGGAACT 5'
The protein product derived from the DNA sequence "3' TACTTTCGCGGAACT 5'" would contain the amino acid sequence: Methionine-Aspartic Acid-Glycine-Proline-Serine.
The protein product derived from the DNA sequence you provided can be determined through the process of transcription and translation.
Transcription is the first step in gene expression, where the DNA sequence is used to produce a complementary RNA molecule. In this case, the complementary RNA molecule would be:
5' AUGAUGGCGCUAUAG 3'
Translation is the next step, where the RNA molecule is used as a template to synthesize a protein. In translation, the RNA molecule is decoded into a sequence of amino acids, based on the genetic code.
Based on the genetic code, the RNA sequence you provided would translate into the following amino acid sequence:
Methionine-Aspartic Acid-Glycine-Proline-Serine
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based on the information provided above, which of the following species would best be classified as a specialist?
Salamanders would best be classified as a specialist among the species listed. The correct answer is A.
A specialist is an organism that has a narrow range of food sources or habitat requirements and is adapted to those specific conditions.
Salamanders, as mentioned, lay their eggs in small freshwater pools and feed primarily on insects, which is a relatively limited range of food sources compared to the other species listed.
Ospreys feed on both fish and other animals in the water or on land, snapping turtles have a wider range of food sources that includes plants, fish, frogs, and snakes, and beavers feed on a variety of shrubs, grasses, and crops.
Thus, based on their narrow range of food sources, salamanders would best be classified as specialists.
The question seems incomplete, it must have been...
"Salamanders, ospreys, snapping turtles, and beavers all live in aquatic habitats. Salamanders lay their eggs in small freshwater pools and feed on insects. Osprey habitats include rivers, bays, and swamps and the birds feed on fish and other animals in the water or on land. Snapping turtles live in fresh or brackish water and feed on plants, fish, frogs, and snakes. Beavers build lodges on islands, pond banks, and lake shores and eat a variety of shrubs, grasses, and crops. Based on the information provided above, which of the following species would best be classified as a specialist?
A. Salamanders B. Ospreys C. Snapping turtles D. Beavers"
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can someone help me please
Note that the cycle follows the sequence below:
ElephantGlucose, CO2, photosynthesis, cellular respiration, O², H₂O.Note that the name of the above cycle is the Carbon Cycle.
What is the carbon cycle?The carbon cycle is a fundamental process that describes the continuous exchange of carbon between the atmosphere, oceans, and land.
This cycle starts with the process of photosynthesis, in which plants absorb carbon dioxide (CO2) from the atmosphere and convert it into glucose. During cellular respiration, animals and plants break down glucose to release energy and produce CO2, which is then returned to the atmosphere.
The ocean also plays a role in the carbon cycle, as it absorbs large amounts of CO2 from the atmosphere and acts as a sink for the carbon.
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When electrons in the eletron transport chain lose energy, the energy is
stored as potential energy to create an electrochemical gradient.
lost to the cytoplasm
carried into the mitochondria.
used to break down glucose
Explanation:
When electrons in the electron transport chain lose energy, the energy is transferred through a series of redox reactions in a process known as oxidative phosphorylation. The energy is used to move protons across the inner mitochondrial membrane, creating an electrochemical gradient. This potential energy is then used to form ATP, which serves as the cell's main energy source. Additionally, the electrons that are lost in the electron transport chain are taken up by oxygen molecules in the mitochondria, forming water molecules in the process. The electrons are also used to break down glucose molecules, releasing energy that can be used by the cell for various processes.
Describe how a neural impulse crosses the synapse to another neuron. A complete
answer will include synaptic vesicles, neurotransmitters, receptor sites, and reuptake
and degradation.
Answer: Neural impulses travel from one neuron to another through the synapse. The process begins with an electrical signal in the presynaptic neuron triggering the release of neurotransmitters stored in synaptic vesicles. These neurotransmitters then diffuse across the synaptic cleft and bind to specific receptor sites on the postsynaptic neuron.
When the neurotransmitters bind to the receptor sites, they either excite or inhibit the postsynaptic neuron, depending on the type of neurotransmitter and receptor. This can result in the generation of a new electrical signal in the postsynaptic neuron.
After the neurotransmitters have served their purpose, they are either reabsorbed by the presynaptic neuron through a process called reuptake, or they are degraded by enzymes in the synaptic cleft. This helps to regulate the amount of neurotransmitter present in the synapse and ensures that the signals transmitted between neurons remain precise.
Explanation:
Which of the following is involved in generating changes in the hair cell receptor potential when the stereocilia bend? a high concentration of K in perilymph b. equilibrium potential of -80 mV for Kions c. ion channels on the tips of the stereocilia d. opening of Na channels e none of the above
In Africa, which of the following policies has been most successful at increasing elephant populations?a.Banning the ivory trade by making the buying and selling of ivory illegal.b.Making elephants the common property of the people of the country through governmentownership and control and making the killing of elephants illegalc.Allowing private ownership of elephants and making the ivory trade legald.When used together, the policies in a and b have been more successful than the policy in c.
Combining Option A's ban on the ivory trade with Option B's declaration of elephants as the common property of the nation's citizens under government ownership and control while outlawing their killing has proven to be the most effective strategy for boosting elephant populations in Africa.
Ivory trade: What is it?
The buying and selling of ivory, a hard, white substance that comes from elephants, is referred to as the "ivory trade."
These measures, when taken together, have been found to be more successful than Option C, which merely permits private ownership of elephants and legalizes the ivory trade. The prohibition on the trade in ivory aids in lowering the demand for the material, thereby lowering the likelihood of both legal and illegal poaching and poaching for ivory.
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