What is evolution and natural selection?

Answers

Answer 1
evolution: When a series of organisms changes characteristics over many generations

natural selection: when organisms adapt to their environment so they can reproduce better

Related Questions

fax about blue eyes i don't mind two BRAINLES​

Answers

Answer:

People with blue eyes tend to have greater light sensitivity. Night vision is often better among people with blue eyes. A genetic mutation is responsible for blue eyes. People with blue eyes are more likely to have red eye in photos.

blue eyes are really pretty

Here is a model of Earth's yearly orbit around the Sun. In this model, the names of the seasons apply only to the northern hemisphere, Seasons in the Northern Hemisphere Equinox March 20 or 21 Solstice June 20,21, Spring Winter Summer Autumn Solstice December 21 or 22 Equinox s September 22 or 23 Examine the model, and think about how it would be different for the southern hemisphere. What causes the southern hemisphere to experience summer? A. Earth's north pole is tilted toward the Sun. B. Earth's axis and its equator are at different angles. C. Earth's axis and its orbit plane are at different angles. D. Earth's south pole is tilted toward the Sun.​

Answers

Answer:

D

Explanation:

Answer:D

Explanation:

which two statements describe disadvantages of selective breeding? this is my 5th time asking please help me. ​

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A and C or A and D
Sorry if this is wrong

Answer:

A and C

Explanation:

Which of the following is a disadvantage of asexual reproduction?

Answers

The third one ig, those aren’t really disadvantages though a real disadvantage would be the lack of diversity.
C there is no other mate to change or add different dna to adapt if the environment changes

6. What is the relationship between amino acids, and proteins,
and DNA?

Answers

The genetic code is the relation between the sequence of bases in DNA (or its RNA transcripts) and the sequence of amino acids in proteins.

This makes a water molecule a ___ which allows for other water molecules to "stick" together
A . non-polar molecule
B. ionic molecule
C. polar molecule

Answers

B ionic molecule should be the answer

Answer:

Polar molecule

Explanation:

<3


Which element listed in the table above has an atomic mass of 79?

Answers

Answer: selenium Hope it helps

Explanation:

Which of the following is NOT true of a reaction that breaks a bond?
A. It creates low-energy products
B. It is what happens in cellular respiration
C. It is an endergonic reaction

Answers

Answer:

C

Explanation:

Endergonic reactions use energy to build bonds

Exergonic reactions release energy through breaking bonds

C.  It is an endergonic reaction.

Endergonic v/s Exergonic:

In the exergonic reaction, the reactants are at a higher free energy level than the products (reaction goes energetically downhill) while In the endergonic reaction reaction, the reactants are at a lower free energy level than the products (reaction goes energetically uphill). Endergonic reactions use energy to build bonds  while Exergonic reactions release energy through breaking bonds.When a bond breaks, it creates low-energy products.In cellular respiration, breaking of bond happens.

Therefore, the statement which is NOT true for a reaction that breaks  a bond is option C.

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Please anyone help please help ASAP ASAP please please help

Answers

Answer:

A

Explanation:

the 1st one is the answer

What were the sources of genetic variation in the population?

Answers

Answer:That is, the fraction 48 can be converted to decimal by dividing 4 by 8 . It can be converted to percent by multiplying the3 this is kne f3rcdwecdecfefvrgbvgrbv

Explanation:

and this is sound nba moruf  nba mdidd

Which of the following describes a characteristie of blood viscosity
a. Blood viscosity describes how red your blood is.
b. Blood viscosity describes how thick or thin your blood is,
Blood viscosity describes amount of oxyven found in your blood,
d. Blood viscosity describes the amount of pressure your blood places on the walls of your vions and
arteries,

Answers

B: blood viscosity is how thick/thin the blood is.

I suggest just googling simple questions like these, you’ll get answers faster and easier:)
B: blood viscosity describes how thick or thing your blood is

can oxygen diffuse across the cell membrane?

Answers

Answer:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion or a type of diffusion known as osmosis. diffusion is one of the principal method of movement of substances within sales, as well as the method for essential small molecules to cross the cell membrane.

Explanation:

Hope this helped Mark BRAINLIEST!!!

The genetic composition of daughter cells produced by mitosis differs from that of the daughter cells produced by meiosis. Describe TWO features of the cell division processes that lead to these differences.

Answers

Answer:

plzz mark as brainliest

Explanation: The four daughter cells resulting from meiosis are haploid and genetically distinct. The daughter cells resulting from mitosis are diploid and identical to the parent cell.

The main differences between mitosis and meiosis occur in meiosis stage I.

For the most part, in mitosis, diploid cells are partitioned into two new diploid cells, while in meiosis, diploid cells are partitioned into four new haploid cells.

In mitosis, the daughter cells have the same number of chromosomes as the parent cell, while in meiosis, the daughter cells have half the number of chromosomes as the parent.

The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred.

The events that occur in meiosis but not mitosis include homologous chromosomes pairing up, crossing over, and lining up along the metaphase plate in tetrads.

Meiosis II and mitosis are not reduction division like meiosis I because the number of chromosomes remains the same; therefore, meiosis II is referred to as equatorial division.

When the homologous chromosomes separate and move to opposite poles during meiosis I, the diploid level is reduced from two to one, which is referred to as a reduction division.

TWO features of meiosis are recombination and independent segregation.

Meiosis is a reductional cell division that produces four daughter cells with half of the genetic material.

Recombination refers to the interchange of genetic material between nonsister chromatids during meiosis (prophase I).

Ramdon segregation refers to the independent process of separation of homo-logous chromosomes during meiosis.

In conclusion, TWO features of meiosis are recombination and independent segregation.

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How many chromosomes do people with DMD have?

Answers

Answer:

I think it's two x chromosomes.

Some areas of the world suffer from increased air pollution because they are surrounded by mountains which can trap
warm air above cold air during certain times of the year. What is this known as?
a. A temperature inversion
b. A grasshopper effect
c. Buffer zones
d. AVOC cloud
e.Industrial Ozone smog

Answers

The best answer to go with is b

*HELP ASAP* There are multiple lines of evidence that provide support for common ancestry and evolution. Write 3-4 paragraphs describing at least three of them in detail. Provide at least one example for each line of evidence.

Answers

Answer:

Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.

Answer:

The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.

Explanation:

Help multiple choice

Answers

The answer is
Left: meiosis
Right: cloning
The 3rd one is the answer

where does respiration take place?​

Answers

Answer:

Mitochondria

Example:

Respiration takes place in the mitochondria of cell in the presence of oxygen which is called aerobic respiration.

16
Type the correct answer in the box.
genetic possibilities from independent assortment of its single gamete.
An organism with five pairs of chromosomes can have

Answers

A diploid organism with five pairs of chromosomes can have 2^5 = 32 possible gamete combinations. It is due to random assortment.

Gamete combinations and random assortment

A gamete is a germinal cell, which contains only one set of chromosomes in diploid organisms.

Random assortment refers to the random separation of homo-logous chromosomes during meiosis.

The random assortment is known to increase genetic variation by increasing the number of possible genetic combinations.

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What makes the finding of the finding of Wooly Mammoth fossil very unique from other fossils?

Answers

Answer:

The wooly Mammoth is a animal that was once tried to be revived and it is very rare to find

Explanation:

Which of the following would NOT be considered growth and development?
A. a single cell getting larger before dividing
B. an egg becoming multiple cells
C. an organism going through multiple stages of life
D. group of molecules that are attracted together to form a larger sheet​

Answers

The answer is D cause is the best

Group of molecules that are attracted together to form a larger sheet​ is not considered as growth and development. The correct option is D.

What is growth and development?

Development is defined as an increase in psychomotor capacity, while growth is defined as an irreversible constant increase in size.

Both processes are heavily influenced by genetic, dietary, and environmental factors.

Growth is defined as a person's development in weight, age, size, and habits.

Development, on the other hand, is defined as the process by which a person's growth is visible in relation to physical, environmental, and social factors.

Growth simply means an increase in the size and mass of a specific organism over time.

Development is defined as the method by which a specific organism transforms itself from a solitary cell to a more complex multicellular organism.

Thus, the correct option is D.

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HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Answers

UHH A OR B I THINK MAYBE

Answer:

pollute groundwater

Explanation:

The diagram below shows a hand warmer. It uses a controlled burn of a type of lighter fluid called naphtha.



The device has a refillable reservoir that holds the naphtha liquid. The fuel moves into a glass fiber burner, which absorbs the fuel and allows it to burn slowly without producing a flame. Oxygen reaches the burner through the holes on the cap at the top of the device. As the fuel is burned, heat is conducted to the metal casing of the device.

When the hand warmer is tested, it becomes too hot and uncomfortable to hold. How could the device be modified to solve this problem?
A.
by increasing the size of the fuel reservoir so that it can store more liquid fuel
B.
by replacing the glass fiber burner with a material that does not soak up liquid fuel
C.
by attaching a covering to reduce the amount of oxygen entering the device
D.
by using a fuel that is more flammable than naphtha so that the fuel can be used faster

Answers

Answer:

c

Explanation:

by attaching a covering to reduce the amount of oxygen entering the device

What are the 3 main ways to creating more sustainable energy paths?

Answers

Answer:

Sustainable energy requires a balanced composition between energy security, economic development, and environmental protection [5]. It encompasses energy systems, which are based on three core dimensions: energy security, social equity, and environmental impact mitigation

Explanation:

Which contains alleles A and B in the same genotype what is this phenomenon called

Answers

Answer:

Codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously. An example of codominance is seen in the MN blood group system of humans.

Explanation:

3. What does natural selection favor?

O genotypes

O beneficial traits

O all offspring

O extreme phenotypes

Answers

Answer:

beneficial traits

Explanation:

Having beneficial traits leads to being more likely to survive and reproduce, which is the goal of natural selection and survival.

Answer:

I hope this helps.

Explanation:

During meiosis, which of the following allows for variations in alleles in the gametes
formed?
A) homologous chromosomes stay together
B)chromosome crossover
C)daughter cells identical to parent cells
D)Genetic drift

Answers

Answer: B

Explanation:

please help thanks!!!!

Answers

Answer:

I believe that the smallest is Nucleotide, bases, genes, DNA, Chromsomes.

Explanation:

(HELP ME PLEASE!!)

Which trait would be passed on from a parent to its offspring because of natural selection?

A)one leg that is shorter than the other

B)lighter fur from repeated sun exposure

C)longer legs that avoid predators

D)bulky muscles from working out

Answers

Answer:

I think the answer will be C longer legs that avoid predators

Explanation:

This is because the long legs are natural

Answer:

C)longer legs that avoid predators

Explanation:

As, these traits of having long legs is for avoiding the predators and is the natural for them so it would pass from a parent to its offspring for its protection which is the natural selection.

Energy flows into the producers of an ecosystem through the process of

Decomposition

Cellular respiration

Carbon fixation

Photosynthesis

Answers

Answer:

by the process of photosynthesis

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