Scientists collect information that allows them to make evolutionary connections between organisms. Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic.
Our current understanding of evolution is called a theory because it has been supported repeatedly as new discoveries have been made. proven to be exactly true as originally proposed. corroborated by data that were gathered during a single experiment. developed from the postulates of many scientists.
Answer:
supported repeatedly as new discoveries have been made.
Explanation:
Evolution is called a theory yes this is a true statement as a theory can be changed ad it has records of evolution.
Scientists communicate approximately evolution as a theory, for instance, simply as they communicate approximately Einstein's rationalization of gravity as a theory. A theory is a concept approximately how something in nature works that have long gone thru rigorous checking out thru observations and experiments designed to show the concept proper or wrong. What is evolution?Evolution is a technique that affects adjustments withinside the genetic content material of a populace over time. There are trendy instructions for evolutionary change.
Thus it is clear that evolution is called a theory because it has been supported repeatedly as new discoveries have been made.
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Plants grow towards sunlight what characteristic of living things is this
Answer:
Phototropism.
Explanation:
It refers to the tendency of plants to grow toward the light which they need to produce food for themselves.
Which hormone is essential to our ability to maintain our fluid levels? Which hormone is essential to our ability to maintain our fluid levels? cortisol thyroxine insulin aldosterone
Answer:
Aldosterone.
Explanation:
Aldosterone is a hormone that regulates the levels of sodium and potassium in our body, which leads to regulate our fluid levels.
In order to increase the fluids in our system, aldosterone causes the absorption of sodium from our kidneys. The kidneys are the place where our body filters the blood absorbing what it needs, such as sodium, and excreting the rest as urine. With the entering of sodium to our bloodstream, water also enters, increasing the volume of blood in our body.
Aldosterone is also responsible for the excretion of potassium into the urine, controlling the levels of this ion, which is extremely important for a high number of reactions.
what are the respiratory organs of different animals?(list out)
Answer:
Fish and prawns = through gills
Frog = through lungs but also uses skin and lining of mouth for respiration
Amphibians,mammals and birds = through lungs
Tapeworms,earth worms and leeches = through body wall or skin
Amoeba and other unicellular animals = through plasma membrane
Explanation:
Directions
1. Use the library, internet, and other educational resources to research nuclear energy.
2. Write a three-paragraph report on what you have learned. Be sure to include the uses of nuclear power, how it is
generated, and the impact it has on the environment. Also, answer the question, "Is nuclear energy renewable?" THREE PARAGRAPHS PLEASE HELP !!!!!!!
Answer:
Explanation:
Australopithecina or Hominina is a subtribe in the tribe Hominini. The members of the subtribe are generally Australopithecus (cladistically including the genera Homo, Paranthropus,[2] and Kenyanthropus), and it typically includes the earlier Ardipithecus, Orrorin, Sahelanthropus, and Graecopithecus. All these related species are now sometimes collectively termed australopithecines or homininians.[3][4] They are the extinct, close relatives of humans and, with the extant genus Homo, comprise the human clade. Members of the human clade, i.e. the Hominini after the split from the chimpanzees, are now called Hominina[5] (see Hominidae; terms "hominids" and hominins).
While none of the groups normally directly assigned to this group survived, the australopithecines do not appear to be literally extinct (in the sense of having no living descendants) as the genera Kenyanthropus, Paranthropus and Homo probably emerged as sister of a late Australopithecus species such as A. africanus and/or A. sediba.
The terms australopithecine, et al., come from a former classification as members of a distinct subfamily, the Australopithecinae.[6] Members of Australopithecus are sometimes referred to as the "gracile australopithecines", while Paranthropus are called the "robust australopithecines".[7][8]
The australopithecines occurred in the Plio-Pleistocene era and were bipedal, and they were dentally similar to humans, but with a brain size not much larger than that of modern apes, with lesser encephalization than in the genus Homo.[9] Humans (genus Homo) may have descended from australopithecine ancestors and the genera Ardipithecus, Orrorin, Sahelanthropus, and Graecopithecus are the possible ancestors of the australopithecines.[8]
The generation of radioactive wastes such spent (used) reactor fuel, uranium mill tailings, and other radioactive wastes is a significant environmental hazard associated with nuclear power.
What impact of nuclear power, energy on the environment?Nuclear energy is still readily available, despite the fact that it isn't strictly renewable (since there is only a finite amount of uranium on Earth).
Additionally, even though using nuclear energy to produce electricity is a carbon-free process, building new nuclear energy facilities and mining the uranium fuel have their own environmental consequences.
For millions of years, these substances may continue to be radioactive and hazardous to human health. The trash that nuclear power generates is the most urgent environmental concern.
During the course of a nuclear power plant's operation, a few different types of radioactive material are created, most notably used reactor fuel and the tailings from uranium mills.
Therefore, These pose numerous risks to the health of both people and the environment if they are not handled and disposed of properly.
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where do cell get their food from
Answer:
Blood
Explanation:
Cells get their food from the blood which is absorbed from the small intestine.
Hope it helps :)
Every day, people cook with and consume a variety of foods that contain lipids. Some foods are healthier sources of
lipids than others. The table shows the amount of saturated fat in various foods.
Food (1 tbs or 14 g)
Olive oil
Margarine
Butter
Lard
Canola oil
Amount of Saturated Fat in Foods
Saturated fat (g)
2
2
7
1
Which food is the least healthy source of lipids, based on the data in the table?
margarine
lard
butter
canola oil
Answer:
C
Explanation:
it has more fat then the rest
i just took the test too
Answer:
butter
Explanation:
During Francisco Redi's experiment, he showed that when the meat jars were closed, no new organisms appeared. This confirms _________________, the idea that organisms come from one another. Question 8 options: Abiogenesis Biogenesis Spontaneous Generation Biology
Answer:
During Francisco Redi's experiment, he showed that when the meat jars were closed, no new organisms appeared. This confirms Spontaneous Generation, the idea that organisms come from one another.
Explanation:
hope this will help you :)
I want to design an experiment to see if drinking coffee makes students
score higher on tests. What is the dependent variable in this experiment?
Answer:
The score from the tests
Explanation:
We are learning about variables used within an experiment
We have two variables here -
Independent Variable
Dependent Variable
The question asks "What is the dependent variable in this experiment?"
First off, what is a dependent variable?
Dependent variable - The result or outcome that is being measured
So, if that is the definition, what part of "I want to design an experiment to see if drinking coffee makes students score higher on tests." is the dependent variable?
Well, clearly the outcome that we are looking out for is the score of the tests. Caffeine is being used to see if it makes students score higher on tests, making the test scores the outcome. Making it the dependent variable.
Which element is in abundance in the crust but not in the mantle?
A. magnesium
B. carbon
C. oxygen
D. silicon
Answer:
Carbon is in abundance in the crust but not in mantle
Necrosis is the result of cellular injury that does not allow for cellular adaptation because it is which of the following? (Select all that apply.) Too severe Too prolonged Acute in nature Programmed into the cell itself A result of a disrupted blood supply
Answer:
Too severe
Too prolonged
Acute in nature
Explanation:
Necrosis is can lead to death of a cell, it results from external damage to cell such a s diseases and infection.
Necrosis will not allow other cellular activities because its is acute, any cell affected by necrosis will die premature leading to stop of activities on the body part.
Necrosis is a prolonged sickness that takes a long time, it may require the removal of the dead cell for rejuvenation of new body cells.
Therefore, a damage to Because will not allow for cellular adaptation in that part of the body as it leads to the death of the cell.
how to make backing soda
Answer:
The soda ash is obtained in one of two ways: it can be manufactured by passing carbon dioxide and ammonia through a concentrated solution of sodium chloride (table salt). In our case, it is mined in the form of an ore called trona.
What are the ordered pairs?
Answer:
Ordered pairs are 2 numbers that show where a specific point is on a gird
Example:
(3,2)
This ordered pair would mean 3 over on the x-axis (horizontal) and 2 over on the y-axis (vertical)
another thing to keep in mind, since x comes before y in the alphabet, x also comes before y in ordered pairs (x,y)
Formed elements in blood are ______, and plasma is _______. Select one: a. blood clots; proteins b. mostly lipids; the matrix c. the cells; the liquid portion of blood d. lacking in protein; regulator of blood osmolality e. acellular; cellular
Answer:
option A is correct
Explanation:
Formed elements in blood are blood clots and plasma is proteins. Hence option a is correct.
What is blood?Blood is defined as a fluid that circulates regularly and gives the organism nutrients, oxygen, and waste elimination. Blood is pumped into the pulmonary arteries in the lungs from the right ventricle after entering the right atrium from the body. After absorbing oxygen, the blood returns to the heart through the pulmonary veins, passing through the left atrium, left ventricle, and aorta before leaving the body through the tissues.
In plasma, there are 8% to 9% solids and 91% to 92% of water. It primarily consists of: Blood clotting is aided by coagulants, particularly fibrinogen. Albumin and globulin are two plasma proteins that contribute to keeping the colloidal osmotic pressure at 25 mmHg.
Thus, formed elements in blood are blood clots and plasma is proteins. Hence option a is correct.
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what is the definition of botany
please help
Which is one step that geologists use to find the epicenter of an earthquake?
A: They look at data from at least one seismograph.
B: They measure the difference between arrival of P waves and S waves.
C: They draw circles around the epicenter from three locations.
D: They obtain information about the intensity of earthquakes from seismographs.
Answer:
It is B on edge 2020 which is "They measure the difference between arrival of P waves and S waves".
Explanation:
Have a good day
Answer:
B
Explanation:
The process whereby the earth’s life changes over time through changes in genes of populations of organisms in succeeding generations is called____.a. emigration.b. mutation.c. natural selection.d. evolution.e. genetic drift.
Answer:
Option d (evolution) is the right answer.
Explanation:
This concept postulates that perhaps the different kinds of plants, animals, as well as other living objects aspects universe originate in several other currently existing categories and because the focus on possible is sensitive to variations in generation after generation. Evolution theory has been one of the cornerstones of the contemporary biopsychosocial model.Some other possibilities don't relate to either the scenario is given. Enough that option d seems to be the correct decision.
Which of the following is consumed by producers?
A. Primary consumers
B. Tertiary consumers
C. Secondary consumers
D. Producers make their food
How would siamangs be affected if the rain forests they live in produced less fruit? Explain your reasoning.
Answer:
Siamangs are arboreal,in habitat.They are species of gibbons found in the rain forest. They are skillful at moving among tree branches,their swift movement made them to escape predators.They are very noisy.
These animals are light weight because of light bones.Their head is small and round in shape.They have long arms,longer than the legs.Their body is slim.
75 of their diet is made up of fruits.They are omnivores like human thus they eat plants parts,insects, eggs of small birds etc.
They are endangered species.This is because of rapid deforestation of the rain forest habitats for developments. If 75% of their diet (which is fruits is not available)due to less fruits production, definitely they will be endangered and go to extinction from starvation as other sources of food would not sustain them.
Explanation:
On an annual basis, what is the net result of the contributions/removals of CO2 from the atmosphere due to global photosynthesis and respiration
Answer:
The correct answer is : approximately 3 gT yr^-1 decrease
Explanation:
Carbon dioxide is contribute and removed from the atmosphere by various type of activities that are human activities, biological input or biological removal and geological input or geological removal.
Adding carbon dioxide can be from biological inputs mainly respiration and removed from atmosphere mainly through biological removal mainly photosynthesis.
Both photosynthesis are complementary metabolic process that play major role of adding and removal of carbon dioxide. There is a decrease of 3gT yr^-1 approximately on the annual basis due to these biological process.
What do organs combine to form? a.cells b.organisms c.organ systems d.tissues
Answer:
C. Organ systems
Explanation:
They combine to form an organ system.
Answer:
CExplanation:
Organ systems, such as the circulatory system, are made up of many organs working together. For example, the circulatory system is made up of the heart, veins, and lungs.
I'm always happy to help :)Describe how an enzyme’s structure affects its function
Explanation:
hope this could help you!!!!
4
adenine,thyamine,cytocine,guanine
State the differences between a typical Plant cell and an animal cell.
Why does the word antibiotic suggest that these medications would be ineffective against viruses?
Answer:
Antibiotics cannot kill viruses because bacteria and viruses have different mechanisms and machinery to survive and replicate. The antibiotic has no “target” to attack in a virus. However, antiviral medications and vaccines are specific for viruses.
What is a relatively dense aggregation of fishes, squid, and other mesopelagic organisms capable of reflecting a sonar pulse that resembles a false bottom in the ocean. Its position varies with the time of day.
Answer:
Deep scattering layer, DSL
Explanation:
The deep scattering layer (DSL) also known as "deep sound layer", refers to an oceanic deep layer, more or less defined, that reflects sound and that is formed by a wide variety of animals. It is present in almost every ocean. It is produced by the presence of many organisms of different species that can disperse the sonar waves sent by a sonar equipment.
It was discovered through the ships´ sonar. Whenever they met a layer in which the sound hit, and was often confused with the bottom of the ocean. This is why the DSL is refered to as the "fake bottom".
These animals form layers of not less than 10 meters thick and might easily reach up to 50 meters thick. These layers are often found between 50 and 200 meters deep and can be seen going up and down every day according to the daily vertical migration.
If a hole is created in the chest wall, air could escape or be drawn in, or if bleeding develops within the chest, air and blood can accumulate in the pleural space. This would force the lung to:
Answer:
It'd force the lungs to collapse.
Explanation:
The pleural space is the space between the lung and the pleura of the two lungs that is covered with a thin membrane and filled with fluid.
If air and blood accumulates within the pleural space, this would cause the lungs to collapse because of the pressure.
I hope this answer helps.
A stroke victim has great difficulty moving his right hand and right leg. He also has trouble speaking. Which of his cerebral hemispheres is most likely to have been damaged
Answer:
The correct answer is left cerebral hemisphere.
Explanation:
The left cerebral hemisphere of the brain is accountable for the motor control of the right side of the body, for sensory stimulus from the body’s right side, for analysis and calculations, for the speech, comprehension, and language, for the recognition of letters, words, and numbers, and for time and sequencing.
The left cerebral hemisphere is accountable for the processing of the sensory information and motor information for the body’s right side. Thus, as left cerebral hemisphere monitors the movement of the body's right side, so, based on the extremity of the stroke, which may result in motor skill impairment or functional loss of the right side of the body, shows that the left side of the brain has got affected.
The cerebral hemisphere most likely damaged in this person is the LEFT hemisphere.
The cerebrum can be divided into two major hemispheres known as the right and left cerebral hemispheres.The left cerebral hemisphere is involved in the control o the right side of the body. This hemisphere (left hemisphere) is associated with science and/or mathematical skills, language functions (e.g., grammar, vocabulary), etc.In conclusion, the cerebral hemisphere most likely damaged in this person is the LEFT hemisphere.
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Which of the following abnormalities demonstrates a cranial defect? Select one: a. Encephalocele b. Cystic hygroma c. Holoprosencephaly d. Agenesis of the corpus callosum
Answer:
The correct answer is encephalocele.
Explanation:
The cystic hygroma is a malformation in the neck or upper abdominal area and holoprosencephaly is a malformation or alteration in the facial area, not in the cranial area.
The only one where the shape of the skull is altered (mainly the area of the calotte) is the encephalocele.
Farmers try a new pesticide to prevent damage to their crops. They plant 3 fields. #1 has traditional pesticide. #2 has a new environmentally-friendly pesticide. #3 is left untreated and will be used as a control group. If field #2 has pest damage similar to field #3, you might conclude that...
Which action would most likely increase the amount of carbon in the environment?
choosing to burn coal to generate electricity
using energy-efficient appliances in place of older, traditional appliances
reusing shopping bags instead of using disposable plastic bags
recycling paper and plastic instead of throwing it in the trash
Answer: (A.) Choosing to burn coal to generate electricity
its right leave a rate and a like too
The action which would most likely increase the amount of carbon in the environment is choosing to burn coal to generate electricity. Thus, the correct option for this question is A.
What is an environment?An environment may be defined as anything that is present in the surroundings of a living organism. It includes two types of factors, i.e. biotic and abiotic factors. The term environment was given by Carlyle.
Human Activity is the major cause of Increased Greenhouse Gas Concentrations. Over the last century, the combustion of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.
Therefore, the action which would most likely increase the amount of carbon in the environment is choosing to burn coal to generate electricity. Thus, the correct option for this question is A.
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