Walruses live in the Arctic and have a thick fat layer. The ancestors of the modern-day walruses might not have had such a thick layer. Over time, the walruses have probably changed. According to the theory of evolution by natural selection, what is the most likely reason that this change has probably occurred?

Answers

Answer 1

Answer:

The walruses that had thicker fat layers were more apt to survive and live to reproduce

Answer 2

Answer:

Explanation:

The walruses gained a thicker layer overtime because they adapted to the cold environment allowing them to slowly grow a thicker layer of fat.


Related Questions

Which type of asexual reproduction allows an organism to grow from an older organism? *
Which type of asexual reproduction allows an organism to grow a stem or root? *

Answers

Answer:

1.Budding 2.I do not know

Explanation:

Blological evolution is the process by which populations of organisms change over time. How could natural selection lead to evolution?

Answers

Answer:

Natural selection is the process of nature selecting the fittest animals to survive and/or thrive, making the weaker ones die out. Over time, the animals with the stronger traits will evolve and adapt to its needs.

Explanation:

Which type of lava is most likely to cause the most widespread damage?

Rhylotic, Andestic, or Basaltic?

Answers

Answer:

Balsatic magma is the most likely to cause widespread damage

Explanation:

8. Which of the following is true of osmosis? a. Osmosis is the movement of oxygen across a membrane. b. Osmosis requires the use of the energy molecule ATP. c. Osmosis is a type of passive transport. d. Osmosis moves against the water concentration gradient.​

Answers

Answer:

Osmosis is a passive transport process during which water moves from areas where solutes are less concentrated to areas where they are more concentrated. Illustration of osmosis.

Explanation:

It is verified from Khan Academy a trusted website such as Brainly.

The statement that is true of osmosis is that "Osmosis is a type of passive transport".

WHAT IS OSMOSIS?

Osmosis is the movement of water molecules from the region of higher concentration to a region of lower concentration through a semipermeable membrane.

Osmosis, like diffusion, is a kind of passive transport meaning that it does not require the input of energy (ATP) since it moves water down (not against) the concentration gradient.

Therefore, osmosis is a passive transport and not an active transport.

Learn more: https://brainly.com/question/13655668?referrer=searchResults

What is phagocytosis?
A. the process of red blood cells breaking down pathogens
B. the process of white blood cells breaking down pathogens
C. the self-death of pathogens
D. the shrinking of pathogens

Answers

Answer:

B. The process of white blood cells breaking down pathogens

Explanation:

Please correct me if I'm wrong

When rocks and soil are broken down into smaller pieces, this is called ______.

Answers

Weathering maybe try it

Answer:

weathering

Explanation:

5. Balanced forces cause a change in the motion of plate tectonics. True O False​

Answers

Answer:

False, they do not cause a change

Explanation:

Balanced forces will cause no change in the speed of an object. Balanced forces acting on an object in opposite directions and equal in strength, as shown in the arrows below, do not cause a change in the speed of a moving object. Objects that are not moving will not start moving if acted on by balanced forces.

Look at the cladogram on screen 2. How do pelvic bones of modern day wales compare to the pelvic bones of our ancestors

Answers

Answer:

there is no picture attached?

Explanation: whales evolved from terrestrial mammals so we would be linked ancestrally but without the cladogram I can't tie it to that common ancestor

In an experiment, a scientist places human red blood cells in seawater. What changes do you think would be made to the red blood cells due to osmosis? Cite facts about osmosis to support your prediction.

Answers

Osmosis is when water diffuses into (for example, a plastic bag), so I think the red blood cells would have more water in them and probably increase in size (if I’m not right please correct me!)

Osmosis is when water diffuses into (for example, a plastic bag), so I think the red blood cells would have more water in them and probably increase in size.

What is Osmosis?

The net movement of solvent molecules through a semipermeable membrane is known as osmosis. Since the movement is downward and goes from greater to lower concentration, it is comparable to diffusion.

However, in osmosis, the movement must take place through a membrane that is semipermeable or selectively permeable. It cannot be referred to as osmosis without this component.

The main components of a solution are the solute (a material that needs to dissolve) and the solvent (the component that dissolves the solutes). To determine if a solution is isotonic, hypotonic, or hypertonic in comparison to another solution, the constituent concentrations of the two solutions must be compared.

Therefore, Osmosis is when water diffuses into (for example, a plastic bag), so I think the red blood cells would have more water in them and probably increase in size.

To learn more about osmosis, refer to the link:

https://brainly.com/question/1799974

#SPJ5

Explain where the energy in an ecosystem comes from and how it is distributed to all living things in that ecosystem.​

Answers

Answer:

ummmmmmmmmm

Explanation:

8. From capillaries, blood flows into _________________, blood vessels that carry blood back to the heart.

Answers

Answer:

tissues

Explanation:

Could someone please answer this question?
Write a sentence explaining the relationship among Gene, chromosome, and nucleus.

Answers

Answer: Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Explanation:

Answer:Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Explanation:

The farthest area form the point attachment

Answers

There is no attachment

Match each stem or root to its description.
Plz help meeee
WILL MARK BRANLYIEST ​

Answers

taproot: one main root, fibrous:thick tangled mass of roots, woody: hard stems, herbaceous: soft green stems

Tarpoot: one main root with smaller ones that branch off

Woody: hard stems with bark

fibrous: thick tangled mass of roots

herbaceous: soft, green stems

What structure does bacteria use for movement ?

Answers

Answer:

flagella, which are structures used by bacteria for motility. We will also examine the main characteristics of this particular structure. Flagella (singular: flagellum) are long, thin, complementary whips attached to bacterial cells that allow bacterial movement (motility).

Explanation:

hope this helps

pls mark brainlest if you can

What is not a unique property of water

Answers

Answer:

Water molecules stick together by cohesion

Explanation:

This sticking together of like substances is called cohesion. Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive.

I hope this helps out some~ <3

-Dream

suggest why a baby born without any mitochondria will have difficulties growing

Answers

Answer:

or our bodies the conversion from food energy to ATP happens in mitochondria. If your mitochondria are not working properly then you are less able to convert food into ATP. For cells that require a lot of ATP, for example your muscles, this is a problem and they may become weaker and get tired faster.

Explanation:

What is another term for migration?

Answers

Answer:

Relocation is a synonym of migration.

Answer:

Relocation, Resettling, Moving, Emigration.

Explanation:

Hope this helps love! Bless you.

Plz help !! I don’t know the answer to this

Answers

the producers i took a test like that and got it right

1. Predict: Suppose that a virus infects a small population of bacteria. Predict how the numbers of viruses, infected cells, and uninfected cells will change as the infection progresses. On the blanks below, write increase, decrease, or stay the same. Viruses: Infected cells: Uninfected cells:​

Answers

Answer:

Viruses: stay the same

Infected cells: Increase

Unaffected cells: decrease

Explanation:

What is the difference between chemical and organic evolution

Answers

Good luck!!! Make brain list, or whatever they be saying on here.
The key difference between chemical and organic evolution is that the chemical evolution occurs due to changes in the structure of molecules; from complex molecules to simple molecules with the passage of time while the organic evolution occurs due to the changes in the genetic composition of populations of organisms.

Which statement describes a connection between photosynthesis and cellular respiration?

Question 6 options:

Water is a product of photosynthesis and is a reactant for cellular respiration


Oxygen is a product of both photosynthesis and cellular respiration


Oxygen is a product of photosynthesis and is a reactant for cellular respiration


Water is a product of both photosynthesis and cellular respiration

Answers

Answer: Water is a product of both photosynthesis and cellular respiration

Explanation:

The correct answer is C. Oxygen is a product of photosynthesis and is a reactant for cellular respiration.

What is photosynthesis and cellular respiration?

Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process occurs in the chloroplasts of plant cells and involves the absorption of light energy, the conversion of this energy into chemical energy, and the synthesis of glucose from carbon dioxide and water. Oxygen is a byproduct of photosynthesis, as it is produced when water is split into hydrogen and oxygen during the process.

Cellular respiration is the process by which cells convert the chemical energy stored in glucose into ATP (adenosine triphosphate), which is the main source of energy for cells. This process occurs in the mitochondria of cells and involves the breakdown of glucose through a series of reactions that release energy. Oxygen is a reactant for cellular respiration, as it is required for the breakdown of glucose.

Learn more about cellular respiration, here:

https://brainly.com/question/29760658

#SPJ2

Characteristic in your own words.

Answers

Answer:

a feature or quality belonging typically to a person, place, or thing and serving to identify them.

Explanation:

how the body's white blood cells respond to infections.

Answers

If a pathogen enters your body, white blood cells of your immune system quickly recognise its foreign antigens. This stimulates specific lymphocytes to grow, multiply and finally produce antibodies that will stick to the antigens on the invading pathogens and destroy them.

During cellular respiration, which of the following is equal to the total number of oxygen atoms in glucose and oxygen Gas?

Answers

Answer:

What are the following?

Please list several (at least three) things that could be changed in schools to fit your
answer from question two.

Answers

Answer:

Foods, Classes,hours

Explanation:

Foods could be much better to improve students moods

classes can be modified to be more interactive and fun

Schools starts usually at 7 AM and scientifically the brain starts working around 9 nd 10 am

Stress' negative effects are countered by exercise. Norepinephrine, a hormone that can reduce the brain's reaction to stress, is more prevalent after exercise.

What are the things could be changed in schools to fit you?

You might not be able to lessen the sources of stress in your school day, but you can alter how you react to it.

Children and teenagers who regularly exercise have better cardiorespiratory fitness, stronger bones and muscles, and better control of their weight.

Lessen their grief and worry, and cut their risk of developing illnesses like heart disease

Because it is the only one you have, it is crucial to appreciate your body. Respecting your body entails protecting it from danger.

Such as being injured by someone else, getting into an accident, or abusing it with drugs, alcohol, or tobacco.

Therefore, such quality is helpful in the maintain fitness of an individual.

Learn more about school here:

https://brainly.com/question/1183890

#SPJ2

FOSSILS
Understanding Main Ideas
Fill in the blanks in the table below.


Type of Fossil
Description


Fossils in which _______ replace all or part of an organism
________________

A hollow area in sediment in the shape of an organism
_________________

A solid copy of the shape of the organism


An extremely thin coating of _______ on rock


Evidence of the _________ of ancient organisms
_______________

Remains of organisms in amber, tar or ice

Describe how a mold is related to a cast.

What can a paleontologist tell from fossil footprints of a dinosaur?

What does the fossil record reveal about the evolution of life on Earth?



Building Vocabulary
Match each term with its definition by writing the letter of the correct term in the right column on the line beside the definition in the left column.

___ no longer and never again existing as an organism on Earth a. Evolution
_____ the preserved remains or traces of living things b. Sedimentary rock
____ the process by which all the different kinds of living c.extinct
things have changed over long periods of time
_____ the type of rock that is made of hardened sediment d. Paleontologist
____ an extremely thin coating of carbon on rock e. Fossils
_____ a scientist who studies fossils f. Carbon film

Answers

Answer:

Wow

Explanation:

Ummm ok not sure

PLEASE HELP WILL NAME BRAINLIEST - Jessica uses an aquarium to model convection currents in the ocean. She places a heating
element on the left side of the aquarium. She tapes an ice pack to the right side of the
aquarium. If Jessica adds red food coloring to observe water flow in the aquarium, what
will she see?

Answers

Send a pic of your problem maybe I can help

Answer:

The water that had time to mix with the red food coloring will go to the top left side because heat rises and since it is only warm on the left side the warm water will rise

Explanation:

Which activity demonstrates chemical weathering?

Answers

One example would be freezing water in cracks of a sandstone sidewalk

PLSS HELP
Are they true or false? Think of evidence from the video to justify your
answers.
True
False
Scientific discoveries are
made by scientists working
alone
Scientists quickly accepted
the idea that an asteroid
caused a mass extinction.
The effects of the asteroid
strike were felt around the
world.
This question requires one response per row

Answers

Answer:

First is false, second is false, third is true, unless your talking about a asteroid that hit a planet.

Other Questions
answer please! i need both answers for both of the questions! help is greatly appreciated! The distance around the earth (circumference) is 4.0074 x 10 centimeters.Write this in decimal form. Solve the following system of equations by usingsubstitutiony = -x + 42x + 3y = 8 What do many Europeans receive when they retire? Which statement best helps to explain the observation that NH3(1) boils at -28C, whereas PH: (1) boils at -126C?AThe dispersion forces in NH3 are weaker than the dispersion forces in PH3.BThe dispersion forces in NH3 are stronger than the dipole-dipole forces in PHz.NH3 has hydrogen bonding that is stronger than the dipole-dipole forces in PH3DNH3 has hydrogen bonding that is weaker than the dipole-dipole forces in PH3. The value of 34 + 5 5 = ___. Numerical Answers Expected! Answer for Blank 1: URGENT!!! Find the value of x using the similar trapezoids below. Individual solute particles are broken apart from the solid by these particles. * a Solution b Insoluble c Solvent d Compounds Simplify 5 2y + (-8y) + 5.5. Please put them in order for 15 points true or false: The Japanese learned about the Chinese inventions of gunpowder and printing. HELP MEILL MARK BRAINLIESTTTTFind the value of x that makes the quadrilateral a parallelogram. What did Jan Baptista van Helmont's five-year willow tree investigation demonstrate ? The weight lost program should not consider your food choices, dislike, and your life style. True or false What does Q equal to Your friend gets to school wearing an outfit straight from the pages of a recent fashion magazine. He says he is dressing like the famous actors in the magazine. His pants are stark-white, he has an open-collared shirt, and preppy shoes. This is an example of what type of peer pressure? Which sentence best expresses the main idea of the passage the American scholar Simplify the expression below and combine like terms.8(x4)+12(x6) What were the cultural contributions of the Maurya and Gupta empires? Name three fake reflexive/intensive pronouns that should never be used.