2. "Natural selection is usually thought of as an agent of change in populations, but it can also act to maintain the status quo."
In a short, written response, analyze and evaluate this statement. Include the range of responses of a population to changes in the environment, such as differential reproductive success, the adaptation and development of diversity in and among species, and the change in populations.

Answers

Answer 1

Answer:

Those organisms survive and maintain its population who are chosen by natural selection.

Explanation:

This statement means that when the population experiences a new set of environmental conditions, two things are happened i. e. the population either adjusts through natural selection or becomes extinct. The fossil of dinosaur indicates that extinction occur due to changed in the environment. If the population made changes in itself and adapt the environment then the organism survive otherwise extinction occur.


Related Questions

Which statement would be MOST important to include in a summary of the article?
(A) The discovery of exoplanets has led to a renewed curiosity about the origin of life.
(B) The Atacama Large Millimeter/submillimeter Array is a radio telescope in Chile.
(C) Miller and Urey zapped a mixture of water and chemicals with electric pulses
(D)
RNA is a long molecule that can act like an enzyne and store and transmit information

Answers

Answer:

the answer will be b

Explanation:

trust me I got it right

Manuel eats lunch in the cafeteria every day. How does his digestive system make use of the lunch he eats?

a
A. It changes the food into cells that protect the body from illness.
b
B. It converts food into oxygen that is absorbed into the blood.
c
C. It breaks down some food into usable material for the body and discards the rest.
d
D. It breaks down food into the chemicals needed by the body to regulate temperature.

Answers

Answer:

C

Explanation:

Answer:

c

Explanation:

Which is a natural source of greenhouse gases?

Answers

Answer:

Examples of greenhouses gases are water vapor, carbon dioxide. methane, nitrous oxide and ozone (O3). Lightning produces ozone as does UV light at high altitudes, methane is produced biologically and in volcanoes (but doesn’t last long in the atmosphere). Carbon Dioxide is also produced biologically and in volcanoes. Water vapour is most from ocean evaporation, which is bad news if the Earth gets hotter because that leads to more Water vapour.

Explanation:

A natural source of greenhouse gases is respiration

Greenhouse gases are gases that trap heat in the atmosphere and warm the planet. The major greenhouse gases are:

Carbon dioxideMethaneWater vapor Nitrous oxide Fluorinated gases

The greenhouse gases occur from natural sources and synthetic sources

Some of the natural sources of greenhouse gases are:

Respiration Decomposition of plants.Ocean release etc.

Hence, a natural source of greenhouse gases is respiration

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Manta rays are a type of large fish that are often surrounded by small baitfish. The manta rays are
unaffected but the small baitfish benefit by being protected just by being near the larger fish. What type
of symbiotic relationship does this relationship describe?

Answers

Commensalism relationship.

Which structure inside plant cells helps in photosynthesis?

Chloroplast
Mitochondrion
Nucleus
Vacuole

Answers

Answer:

chloroplasts

Explanation:

chloroplasts

Photosynthesis takes place in chloroplasts; cell walls allow plants to have strong, upright structures; and vacuoles help regulate how cells handle water and storage of other molecules.

Answer:

Chloroplast

Explanation:

photosynthesis takes place in chloroplasts

what happens in a warm front​

Answers

Answer: A warm front forms when a warm air mass pushes into a cooler air mass, also shown in the image. Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms.

Which of the following best describes a characteristic of DNA that makes it useful as hereditary material?

Please give 1 answer.


Nucleotide bases in one strand can only be paired with specific bases in the other strand.


There are many different types of nucleotide bases that can be incorporated into DNA


The nucleotide bases can also be used to provide the energy needed for reproduction


Nucleotide bases can be randomly replaced with different nucleotide bases to increase variation

Answers

Answer:

A. Nucleotide bases in one strand can only be paired with specific bases in the other strand.

Explanation:

Had the same question on a test. Hope this helps :)

DNA is a genetic material found in every living organism. DNA is made up of purines, pyrimidines, a pentose sugar, and phosphate backbone. DNA is a genetic material that carries information from parent to daughter cells.

The correct answer is:

Option A. Nucleotide bases in one strand can only be paired with specific bases in the other strand.

Characteristics of the DNA include:

1. DNA is a double-stranded genetic material, which is made up of four nitrogenous bases, adenine, cytosine, thymine, and guanine.

2. These nucleotides bind to specific nucleotide sequences present on the template strand of the DNA.

3. DNA consists of coded sequences known as genes, which are inherited from the parent to the daughter cells.

4. DNA undergoes a unique semi-conservative mode of replication.

Thus, the correct answer is the ability of the DNA nucleotides to bind to the specific bases in the other strand.

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What phenomenon is considered to be evidence of the universe "cooling off" after the great explosion of the
Big Bang?
black holes
O cosmic background radiation
O gamma rays
O X-rays

Answers

Answer:

If I’m correct it’s O cosmic background radiation

Explanation:

Answer:

black holes

Explanation:

PLEASE HELPPP


from the illustration above classify #1
a: bird
b: fish
c: amphibian
d: insect
e: mollusk
f: mammal
g: reptile
h: none of these

Answers

Answer:

#1 is a reptile

Explanation:

I’m pretty sure only reptiles have scales

The classifications of the below-illustrated organisms are as follows:

#1 = Reptile.#2 = Mammal.#3 = Bird.#4 = Amphibian.

What are the characteristics of Reptiles?

The characteristics of reptiles are as follows:

They perform locomotion through crawling or creeping mode.They are mostly terrestrial animals. Their body is covered by dry and cornified skin. They do not possess external ear openings. Their heart is typically three-chambered, but exceptionally crocodiles have a four-chambered heart.

Mammals are mammary glands in order to feed their young ones. Amphibians have the ability to live in both water and terrestrial habitats. They have two pairs of limbs. The Body is divisible into the head and trunk.

Birds are classified into the category of Aves. The presence of feathers is one of the most important characteristics of this type of classification.

Therefore, the classifications of the below-illustrated organisms are mentioned above very briefly.

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_____ is a type of air current that forms high in the atmosphere?
A. Air mass
B. Atmosphere
C. Jet stream
D. Ocean

What happens to the jet stream in North America during winter?

A. It moves east

B. It moves North

C. It moves South

D. It moves West

Answers

Answer:

For the 1st one it's Jet streams and the 2nd one is South

Human p53 is a tumor-suppressor gene located on chromosome 17. The function of this gene is to prevent cells with damaged DNA from undergoing mitosis. What would most likely result if there were a mutation that decreased the function of the p53 gene?

Answers

The answer is “Germs cells would undergo only one meiotic division.

Explanation:

I remember learning this in my biology class

Single amino acid changes in p53 caused by TP53 gene mutations make the protein less functional. Without p53, cell proliferation is not efficiently controlled, and DNA damage can build up in cells.

How p53 gene is important?

Such cells might continue to divide uncontrollably, which would promote the development of tumors. By stopping the cell cycle to give the repair mechanisms time to restore genomic stability, p53 plays a significant function as a DNA repair facilitator.

Additionally, p53 adopted a variety of roles to directly influence the operation of different DNA-repair mechanisms.

Cancer cells may develop and spread throughout the body as a result of mutations (changes) in the p53 gene.

Therefore, numerous cancer kinds and the genetic disorder Li-Fraumeni syndrome have both been linked to these alterations.

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True or false
The amounts of salt in ocean water is the same everywhere on earth?

Answers

Answer:

False

Explanation:

Different areas and seas have higher or lower salt levels

What makes hunting breeds a good choice for studying dog navigation?

Answers

Answer: Pointers make an excellent choice for these excursions because they are lean and biddable—important qualities in dogs who will be hundreds of yards away from you during long-range hunts. Conversely, a dog plying the thick woods of a ruffed grouse covert will need to work close.

Explanation:

hunting breeds, such as dachshunds, foxterriers, and Welsh terriers. For generations, people have bred hunting dogs to track prey andthen find their way back to their owners. “Weknow about homing behaviors in these breedsfrom observations, but they haven’t been studiedin detail,” says Benediktová.

Explanation:

What key molecule is needed in any Active Transport scenario? *

Answers

Answer:

adenosine triphosphate (ATP)

Explanation:

Active transport mechanisms require the use of the cell's energy, usually in the form of adenosine triphosphate (ATP).

I need help on please

Answers

Answer:

D.

Explanation:

Sugar carbs (or simple carbs) give you quick-acting, short-term energy and can be found in fruits, white bread, cereal, juice and soft drinks. Starch Carbs (or complex carbs) give you slow-releasing, long-term energy and can be found in whole grains, vegetables and legumes (beans and peas).

If a cell contains chloroplasts, a cell wall and a large central vacuole, it must be a(n) ___________.

Answers

Answer:

Plant cell

Explanation:

I'm not sure if this is what you were looking for, but hope I helped

What is the complementary DNA sequence to the DNA sequence GTA TAC ATG

possible answers:
GTA TAC ATG
GAT ATC TAG
CTA TAG ATC
CAT ATG TAC

Answers

Answer:

CAT ATG TAC

Explanation:

Adenine (A) pairs with Thymine (T)

Cytosine (C) pairs with Guanine (G)

And vice-versa

When the Sun’s radiant energy falls on Earth’s oceans, it causes water to change state by evaporating. Which form of energy does water vapor have?
A.
chemical potential energy
B.
elastic potential energy
C.
electric energy
D.
vibrational energy

Answers

Answer:

A

Explanation:

Answer:

A chemical potential energy

Explanation:

What is the difference between an embryo and a foetus

Answers

Answer:

An embryo is the early stage of human growth in which the vital body structures of organs are developed. In the 11th week of pregnancy, which is the 9th week of development after egg fertilization, an embryo is considered a fetus.

Explanation:

Answer:

An embryo is the early stage of human development in which organs are critical body structures are formed. An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization of the egg.

Explanation:

Would you rather burn to death or freeze to death? Hmm...

A. approach-approach conflict
B. avoidance-avoidance conflict
C. approach-avoidance conflict
D. double approach-avoidance conflict

Answers

Answer:

c

Explanation:

Type a paragraph explaining how the atoms in sugar molecules can be used to form amino acids and other large carbon-based molecules. Cite Work

Answers

Answer:

install socratic it gives you all answers

Explanation:

Organize the following materials:

pen
staple
board
pencil
paper
desk
marker
paper clip
safety pin

Answers

Answer:

THINGS U WRITE WITH

pen pencil marker

Other stuff

Explanation:

is that what u meant?

Made of Plastic; Pen, marker

Made of wood/leaf; board, pencil, desk, paper

Made of metal; staple, desk, paper clip, safety pin

Escherichia coli is the scientific name of a bacterium. What category of
classification is Escherichia? *

A.order

B.genus

C.phylum

D.species

Answers

it’s (b) Escherichia is the name of a taxonomic genus. A genus is a grouping of organisms that is more specific than a family, but broader than a species.it’s also a bacteria

Escherichia coli is the scientific name of a bacterium. genus category of classification is Escherichia. The correct option is option (B).

In the scientific classification system, Escherichia is the genus of the bacterium. The genus is a higher taxonomic rank that groups closely related species together.

In this case, Escherichia is the genus name for a group of bacteria within the family Enterobacteriaceae.

The scientific name of an organism consists of the genus and species names together, with Escherichia coli being a specific species within the Escherichia genus.

Therefore, Escherichia coli is the scientific name of a bacterium. genus category of classification is Escherichia. The correct option is option (B).

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What would be an appropriate key for these traits

Answers

Answer:

The correct answer is -

TT - short    BB - blue eyes

Tt - short tail  Bb - blue eyes

tt - no tail bb - brown eyes

Explanation:

In this given question it is stated that short tails of ribbits are dominant over the no tail trait of the rabbits and similarly blue eyes trait of the rabbits is also dominant over the brown-eye trait.

A dominant trait is represented by a capital letter and a recessive trait is represented by the small letter so for the tails alleles will be denoted as T and t, and for the eyes, the alleles would be B for blue and b for brown.

The key for these traits would be-

TT - short    BB - blue eyes, due to both dominant allele,

Tt - short tail  Bb - blue eyes, due to dominant allele masks the recessive allele

tt - no tail bb - brown eyes, due to both alleles are recessive


Kelp me plz question is above

Answers

Answer:

top: response bias, middle: question-wording bias, bottom: under-coverage

Explanation:

what is the dependent variable in the video set

Answers

Answer:

caffeine would be the dependent variable because it is feeding off of the control onion

What organisms provides all the energy for an ecosystem?

Answers

Answer:

Plants, algae and photosynthetic bacteria provide an energy source for a majority of the worlds ecosystems.

Explanation:

Adult stem cells are best described as?

Answers

Explanation:

1 Definition. Adult stem cells are undifferentiated cells that reside among differentiated cells in a tissue or organ. They have the ability to renew themselves and differentiate into specialized cell types.

Adult stem cells, also known as tissue-specific stem cells or somatic stem cells, are multipotent cells that replace damaged and dying cells.

What are somatic stem cells?

Somatic stem cells, also known as adult stem cells, are found in organs and tissues, have the ability to self-renew and give rise to the differentiated cell types that make up that organ or tissue (multipotency), and play an important role in the maintenance and repair of those organs and tissues. Adult stem cells are sometimes referred to as embryonic stem cells.

The bone marrow, the skin, the intestine, the brain, the blood vessels, the teeth, the reproductive system, and the heart are only some of the organs and systems in the body that include somatic stem cells.

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Why is about half of all freshwater on Earth is inaccessible to humans?
Group of answer choices

It is too deep underground

It is in the atmosphere in clouds

It is too dirty to clean

It is frozen in glaciers

Answers

it is frozen in glaciers
It is frozen in glaciers

can you create a punnett square for this question?

Answers

Answer:

Explanation:

HERE U GO

This is the punnet square

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