Answer:
Life expectancy has steadily risen.
People live longer lives.
To understand the reasons why the number of people in the world has increased and the population growth rate has decreased, it is necessary to understand how the world's demographic growth rate is calculated.
The calculation is made from the balance between the total number of people alive and the total number of deaths that occurred in a period of time.
Therefore, we can understand that the population growth rate has decreased due to several relevant factors, such as:
Increased life expectancy.The decrease in infant mortality.Rising fertility rates.Urbanization.Economic development.These are some of the reasons that help us understand why population numbers increase and population growth rate decreases.
Economic development, new technologies and a better quality of life for the population are directly related to the decrease in the population growth rate.
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Two views of a kidney. Which level of organization is shown in the diagram? organ ,tissue, organ system, cell
Answer:
tissue
Explanation:
its tissue
Answer:
b. tissue
Explanation:
edge 2021
Photosynthesis is the process by which leaves absorb light and carbon dioxide to produce carbohydrate (food) for plants to grow. Leaves are adapted to perform their function, they have a large surface area to absorb sunlight.
Explanation:
Yes, all this give the definition and adaptation of leaves to photosynthesis
Which animal population do scientists frequently study in order to identify specific ways to evaluate the impacts of contaminants on biological communities?
a. bottlenose dolphins
b. giant tortoises
c. mallard ducks
d. swan geese
Answer:
mallard ducks I think so
Answer:
D.
Explanation:
Galapagos tortoises have been and continue to be threatened by predation and habitat destruction from invasive species, and increasing human
please answer this:)
What is the main transformation that occurs during glycolysis?
Glycolysis produces ATP and pyruvate by oxidizing water.
Glycolysis produces ATP and pyruvate by oxidizing glucose and NAD+.
Glycolysis produces pyruvate, ATP, and NADH by oxidizing glucose.
Glycolysis produces CO2, ATP, and pyruvate by reducing glucose.
Answer:
Glycolysis produces pyruvate, ATP, and NADH by oxidizing glucose.
Explanation:
This is the main transformation that occurs during glycolysis. Hence, this statement is correct answer.
Glycolysis produces pyruvate, ATP, and NADH by oxidizing glucose.
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Which of the following statements helps support the endosymbiotic theory?
Choose 1 answer:
A
All cells contain ribosomes that conduct protein synthesis.
B
Cells contain genetic information in the form of DNA.
If isolated from a eukaryotic cell, mitochondria can no longer survive and reproduce on their
own.
If isolated from a plant cell, a chloroplast can survive and reproduce on its own.
Answer:
C. If isolated from a eukaryotic cell, mitochondria can no longer survive and reproduce on their own.
Explanation:
The endosymbiotic theory proposes that early eukaryotic cells evolved from endosymbiotic interactions among prokaryotic cells. This theory states that mitochondria and chloroplasts were once primitive bacterial cells that were ingested by large anaerobic prokaryotic cells, and then these cells benefited from living and working together. The most important lines of evidence that support this theory are that mitochondria and chloroplasts contain their own genetic material (circular DNA) and their own protein biosynthesis machinery (ribosomes).
If an egg with 22 chromosomes is fertilized by a normal sperm with 23 chromosomes the result is a condition called
Answer: the answer is monosomy
Which structure is found in all cells
cytoplasm im pretty sure
plasma membranes
dna
ribosomes
cytoplasm
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Why is it possible for a FPR (formyl-peptide receptor) to detect a formyl peptide in the
absence of a bacterial infection?
Answer:
These receptors were originally identified by their ability to bind N-formyl peptides such as N-formylmethionine produced by the degradation of either bacterial or host cells. Hence formyl peptide receptors are involved in mediating immune cell response to infection.Mark me as brainliest ❤️__________ commonly cause increased energy and alertness, increased heart rate and respiration, and loss of appetite.
Answer:
Stimulants commonly cause increased energy and alertness, increased heart rate and respiration, and loss of appetite.
Different types, or isotopes, of oxygen exist in the ocean and are incorporated into the skeletal fragments of animals. What can the ratio of preserved isotopes tell us about climate?
Answer:
The correct answer is - Certain ratios of oxygen reflect either warmer or cooler ocean temperatures.
Explanation:
Ocean have different isotypes or types of oxygen throughout the ocean and also incorporated in the shells of the marine animals of the particular region and time.
We can found out the climate and more particularly the temperature of the ocean as The more 18^O found in the shell or sediment of the animal, the colder the climate and vice versa, however, it is opposite in relation to that of glacier ice.
Select all the correct answers. Which two examples may be converted into fossil fuel after being buried under pressure for a long period of time?
Answer:
Coal and petroleum.
Explanation:
Coal and petroleum are the two examples that can be converted into fossil fuel after being buried under pressure for a long period of time. Both coal and petroleum formed underground with the presence of very high temperature and pressure. Coal is formed when the plant material is placed under high temperature and pressure for thousand of years while on the other hand, petroleum formed when dead bodies of animals are present underground for a very long time with a suitable pressure and temperature turn into petroleum.
What are the two main processes carried out by the excretory system?
A.Absorbing needed nutrients and getting rid of the excess
B.Separating and eliminating wastes from the body
C. Maintaining weight and regulating temperature
D.Controlling the amount of water in the body and eliminating salt
Explanation:
[tex]B.) Separating \: and \: eliminating \: wastes \: from \: the \: body \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ hope \: it \: helps \: you \: (. ❛ ᴗ ❛.)[/tex].
.DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?
A.
Answer:
folic acid is the variable
Explanation:
Answer:
Explanation:
folic acid is the variable
An amoeba is a single-celled organism that feeds on algae, plant cells, and bacteria. When an amoeba feeds, it first makes contact with the food particle. Next, the amoeba starts to surround the particle. Once the particle is completely engulfed, it is surrounded by a layer of the amoeba's membrane, forming a vesicle. The pH in the vesicle is then lowered and the contents are degraded.
What type of transport is involved in this process?
A.
endocytosis
B.
diffusion
C.
passive transport
D.
exocytosis
Answer:
A. endocytosis
Explanation:
Endocytosis is the type of transport that is involved in this process because it engulf the food material. Amoeba engulfs food particles with the help of its pseudopodia which are the projections of cell membranes. A food vacuole is formed around the food particle. This process of engulfing a matter by the projections of the cell membrane to form a vacuole is called endocytosis.
ILL GIVE BRAINLIST PLS HELP!!!!!!!
Explanation:
The answers to number 10 are
I for homeostasis
B for metabolism
B for biosphere
E for ecosystem
I for system
E for biology
the answer to no. 11 are
B for biodiversity
B for metabolism
G for organism
G for biosphere
I for cell
I evolution
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All of the given answer options represent organisms that could coexist in an ocean
ecosystem. In this hypothetical ecosystem, which organism will receive the least amount of
energy in the food pyramid?
Tuna
Great white shark
Seal
Anchovy
Answer:
B. Great white shark
Explanation:
In any food pyramid, the organism at the top of the food pyramid usually gets the least amount of energy in the food pyramid, while those at the bottom have the highest energy in the food pyramid. This is because, as energy moves up the pyramid, some are lost.
In an hypothetical ecosystem, the great white shark will top the food pyramid. Therefore, it would get the least amount of energy in the food pyramid.
which celestial object is the smallest
Select all that apply Select all true statements about the Glomeromycota. Multiple select question. They are plant pathogens and parasites. They do not undergo sexual reproduction. They lack nuclei. They form arbuscular mycorrhizae.
Answer:
They do not undergo sexual reproduction.
They form arbuscular mycorrhizae.
Explanation:
Glomeromycota form arbuscular mycorrhizae and they do not undergo sexual reproduction.
Glomeromycota is one of the divisions of fungi that can be found in soils where they form symbioses(association where both glomeromycota and the plant benefits) with the roots of the plants. They can also be found in wetlands. An example of glomeromycota is Acaulospora.
They are also called mycorrhiza. They reproduce through asexual reproduction.
Which is a property of every homogeneous mixture? Each part of the mixture has the same appearance. The mixture is made up of a solid dissolved in a liquid. The characteristics of the mixture change within a single sample. The components of the mixture change within a single sample.
Answer:
Each part of the mixture has the same appearance.
Explanation:
Homogeneous mixture consists of substances that mix evenly. Therefore has same appearance.
During the respiration of an organism
A, 1 molecule of glucose produces 2
ATP molecules whereas in the
respiration of another organism B, 1
molecule of glucose produces 38 ATP
molecules. Which of the organisms, A
or B has anaerobic mode of
respiration? Explain with reason.
Answer:
The correct answer is - organism A is anaerobic.
Explanation:
Organism A can convert glucose into alcohol, as it undergoes anaerobic respiration, however, there is an incomplete breakdown of glucose. In this process, there are only two molecules of pyruvate formed, and the rest convert to lactic acid or ethanol.
The energy is only enough to release two ATPs. In the aerobic process, there is a complete breakdown of glucose in CO2 and H2O with 38 ATPs.
The correct answer is - organism A is anaerobic.
What is one factor that could account fir a rise int the water table? A.more clouds B.less porous soil C.more precipitation D.more wind
Answer:
I agree that it is C
What is a gene? ……………….
Answer:
2nd one is correct
Explanation:
Answer: B
Explanation:
Which element must be present for a compound to be dassified as an organic compound?
hydrogen
carbon
oxygen
nitrogen
Answer:
Carbon
Explanation:
In addition to be found in living or once living matter, all organic compounds must contain carbon.
A triplet of bases in a template strand of DNA is GAT. What would be the corresponding codon for mRNA?
СТА
CUA
CTU
CUA (This one is wrong)
I don't know why there are two CUAs, but if someone could please help. This is confusing for me. Please explain & no false answers. Thanks much in advance!
Answer:
CUA
Explanation:
Chances are your teacher accidentally put the same option twice and marked one of em incorrect. You infact selected the correct answer because CUA is correct.
DNA has 4 bases: ATGC (Apples on Trees = A - T, & Cows eat Grass = C-G)
RNA has 4 bases: AUGC (RNA lacks the base T so A binds with U instead).
So for template strand GAT, the mRNA made from this codon has complimentary pairing based on RNA so G binds with C, A binds with U, and T binds with A.
A triplet of bases in a template strand of DNA is GAT, the corresponding codon for mRNA - CTU
DNA is a two-stranded molecule. Each strand is a polynucleotide composed of A (adenosine), T (thymidine), C (cytidine), and G (guanosine) in a sequence.
Adenine always bonds with thymine, and guanine only bonds with cytosine. In RNA however, uracil is substituted for thymine instead. So, in transcription, adenine turns into thymine, and guanine turns into cytosine, and vice-versa.
Thus, A triplet of bases in a template strand of DNA is GAT, the corresponding codon for mRNA - CTU
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What kind of material is found in the C horizon of a soil profile?
hardpan
mineral and organic matter
clay particles
partially weathered parent material
Explanation:
partially weathered parent material
Answer:
partially weathered parent material
Explanation:
Name the process by which sugar moves into cell A.
Name the process by which sugar moves into cell B.
Answer:
need picture brahj, but I got u, when it moves from high concentration to an area of low concentration, a process called diffusion. its process of moving glucose across the cell membrane is called facilitated diffusion.
Explanation:
7. Give two examples of biochemical reactions and explain how an organism uses ATP within the reactions.
Answer:
Because of its energy supply, ATP is necessary for all biological reactions.
ATP is employed both in salt and potassium pumping operations and in the cellular breathing mechanism.
Explanation:
The breakdown of glucose, which frees the cell's energy for life functions, is an example of a catabolic response. Endothermic reactions are called anabolic processes in organisms. The connection between amino acids and a protein is an example of an anabolic response.
If a cell needs energy, this link breaks into adenosine diphosphate (ADP) and a free molecule of phosphate... With an excess power of the cell, this energy is stored by creating ATP from ADP and phosphate. For any muscular contraction, ATP is needed for metabolic reactions.
-To break down one glucose into pyruvate molecules in Glycolysis 2 ATP molecules 4 ATP molecules are produced for a net addition of 2 ATP molecules.
-An inorganic carbon is converted into sugar by ATP in photosynthesis.
why is DNA a useful form of evidence for developing a phylogenetic tree?
a) DNA never changes
b) DNA is the newest thing in science
c) DNA is passed from generation to generation
Answer:
DNA is useful for a phylogenetic tree because DNA is passed from generation to generation.
the answer;
should be C
HAVE A NİCE DAY
Explanation:
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The data of this lab
the
hypothesis because there was a difference in bird
beak distribution
Answer:
The answer is "supported and when fruit was removed"
Explanation:
It dated the idea from this laboratory because the distribution of avian beaks differed. If any kind of food available keeps shifting, the frequency of the beak types changes as beaks with beaks is far more suitable for food available. The data in this laboratory confirmed the theory, so because the fruit was removed by birds. These results of this laboratory confirm this idea because the dispersion of pigeons when food was taken was varied.
Answer: 1. supported 2. when fruit was removed
Explanation: :)