briefly explain natural selection​

Answers

Answer 1

Answer:

Explanation:

Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.


Related Questions

the thick mucus secreted by the tissues lining the respiratory passages is known as

Answers

It is known as the phlegm

PLSS HELP I WILL GIVE U 50 POINTS i cant give image tho but her is a description:Images shows a lake labeled carbonates in water, a cow labeled animal respiration, a tree labeled photosynthesis, a factory labeled factory emissions, the sun labeled sunlight, a cloud labeled carbon dioxide in atmosphere, another tree labeled plant respiration, an arrow from organic carbon to dead organism, and fossils and fossil fuels. Arrows are labeled as follows: A from the sunlight to photosynthesis, B from carbon dioxide in atmosphere to photosynthesis, C from factory emissions to carbon dioxide in atmosphere, D from carbon dioxide in atmosphere to carbonates in water, E from dead organisms to fossils and fossil fuels, and F from plant respiration to the sky.
now the question: Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected? --

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c and e....... take this answer with a grain of salt!

¿De qué manera comprobarías el funcionamiento del filtrador de agua?

Answers

Answer:

La forma más eficaz de determinar si su filtro de agua funciona correctamente es analizar el agua antes y después de que pase por el filtro.

Why is the sequence of amino acids important to protein function?

Multiple choice question.

A)
The sequence of amino acids doesn't have an effect.

B)
The order of amino acids determines the shape a protein will take.

C)
The order of the amino acids can be read like a code to assemble DNA.

D)
Amino acids can only be combined in a specific order, otherwise the bonds will fall apart.

Answers

Answer:

b

Explanation:

mutations in an amino acid sequence affect the function of its protein

Astrology is pseudoscience. What can you conclude about the claims made by astrology? A. They are based off of critical thinking. B. They are based on unscientific methods. C. They are based on repeated evaluation. D. They are based on logical reasoning.

Answers

Answer:

B

Explanation:

Astrology has not demonstrated its effectiveness in controlled studies and has no scientific validity.

the red blood cells and brain are two body tissues that derive most of their energy from

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[tex] \huge \mathfrak{{ \pmb{ \underline{ \red{Answer}}}}}[/tex]

The red blood cells and brain are two body tissues that derive most of their energy from glucose.

Glucose is the answer.

The red blood cells and brain are two body tissues that derive most of their energy from carbohydrates. The correct option is C.

What are carbohydrates?

Sugar molecules make up carbohydrates, or carbs. Carbohydrates are one of the three primary nutrients included in foods and beverages, along with proteins and fats.

Glucose is created by your body's breakdown of carbs. The primary source of energy for the cells, tissues, and organs in your body is glucose, sometimes known as blood sugar.

Under normal conditions, glucose serves as the brain's main energy source.

Using either glycolysis or oxidative phosphorylation—the latter of which is 15 times more efficient—glucose is used to create energy in the form of adenosine triphosphate (ATP).

In the absence of glucose, the brain has backup energy sources, such as ketones created by fatty acid metabolism, which predominantly takes place in the liver.

These include 3-hydroxybutyrate, acetone, and acetoacetate (3BHM).

Thus, the correct option is C.

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Your question seems incomplete, the missing options are:

fat

protein.

carbohydrate.

iron.

what happens when air masses of different temperatures meet?

Answers

Answer: When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix. ... Winds are common at a front. The greater the temperature difference between the two air masses, the stronger the winds will be.

Explanation:

how does the loss of species affect the entire ecosystem​

Answers

Answer:

Declining biodiversity lowers an ecosystem's productivity (the amount of food energy that is converted into the biomass) and lowers the quality of the ecosystem's services (which often include maintaining the soil, purifying water that runs through it, and supplying food and shade, etc.).

Answer:

"When a species becomes extinct, they reduce the variety of animals, plants, or bird species from that ecosystem resulting in the extinction of the other species that were dependent on them. Different species are playing different roles in the ecosystem to maintain a balance of the world." Credits to outside sources that it won't let me say :(

the part of the endocrine system that is responsible for overseeing

Answers

Answer:

Part of the endocrine system that is responsible for overseeing

The pituitary gland is located at the base of the brain beneath the hypothalamus and is no larger than a pea. It is often considered the most important part of the endocrine system because it produces hormones that control many functions of other endocrine glands.

Explanation:

hazards to humans that come into contact with it,
4. Study the graphs in the stimulus. Order the events that occurred at the Bodega Bay study
site, where scientists used traps to catch and count samples of marine organisms, from
1to 5. Write a 1 by the first event to occur and a 5 by the last event.
5 The number of native clams per sample falls from 100 to 10.
1 Scientists find European Green Crabs in Bodega Bay.
4 Scientists find that the number of native clams per sample has risen to 40.
3 The number of native shore crabs per sample falls from 25 to 20.
2 The number of European Green Crabs per sample falls from 5 to 4.

Answers

Number 1 to 5 which would be that then answer

What would be the speed of a wave with low tension, a distance of 8.5 cm and a time of 3.25 seconds?

Answers

The speed of the wave will be 0.026 m/s

The speed of a wave is the distance traveled by a given point on the wave (such as a crest or trough) in a given interval of time.

Speed is given by the formula

[tex]Speed = \frac{Distance}{Time}[/tex]

From the question,

Distance = 8.5 cm

First, convert this to meter

Recall:

100cm = 1m

∴ [tex]8.5 cm = \frac{8.5}{100}[/tex] m

8.5 cm = 0.085m

and

Time = 3.25 seconds

Now, putting the above parameters into the equation

[tex]Speed = \frac{Distance}{Time}[/tex]

∴ [tex]Speed = \frac{0.085}{3.25}[/tex]

Speed = 0.026 m/s

Hence, the speed of the wave will be 0.026 m/s

Learn more here: https://brainly.com/question/13791938

Answer:

The speed of the wave will be 0.026 m/s

Explanation:

__________________________ a. A laboratory in a major university surveys all the reactions involving bromine. __________________________ b. A pharmaceutical company explores a disease in order to produce a better medicine. __________________________ c. A scientist investigates the cause of the ozone hole to find a way to stop the loss of the ozone layer. __________________________ d. A pharmaceutical company discovers a more efficient method of producing a drug. __________________________ e. A chemical company develops a new biodegradable plastic. __________________________ f. A laboratory explores the use of ozone to inactivate bacteria in a drinkingwater system.

Answers

Basic research generates basic knowledge. Applied research solves practical problems. Technological development provides tools and artifacts for research. A: basic research. B, C, F: applied knowdelge. B, D, E: technological development.

----------------------------------------

Let us first review some framework.

Basic research is directed to understand fundamental problems or issues. It is about generating basic knowledge. It constitutes the theoretical basis of knowledge on which applied science or technology is based.

Applied research makes use of the knowledge generated by basic science to solve practical problems. It generates knowledge that has practical use.

Technological development is one of the main tools of science. Its main function is to create useful tools and artifacts to facilitate the scientist's work.

Now let us classify each item.

a. A laboratory in a major university surveys all the reactions involving bromine. BASIC RESEARCH

b. A pharmaceutical company explores a disease in order to produce a better medicine. APPLIED RESEARCH and TECHNOLOGICAL DEVELOPMENT

c. A scientist investigates the cause of the ozone hole to find a way to stop the loss of the ozone layer. APPLIED RESEARCH

d. A pharmaceutical company discovers a more efficient method of producing a drug. TECHNOLOGICAL DEVELOPMENT

e. A chemical company develops a new biodegradable plastic. TECHNOLOGICAL DEVELOPMENT

f. A laboratory explores the use of ozone to inactivate bacteria in a drinkingwater system. APPLIED RESEARCH

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Which of these claims is true of Venus?


A. Venus has two moons.

B. On Venus, a day is longer than a year.

C. Venus is the fourth planet from the sun.

D. The atmosphere of Venus is capable of supporting life.

Answers

Answer:

B.) On Venus, a day is longer than a year, is the answer to your question. I hope this helps.

Answer:

b

Explanation:

took the test

what is the difference between sister chromatids and homologous chromosomes?

Answers

Answer:

A sister chromatid refers to the identical copies (chromatids) formed by DNA replication of a chromosome, with both copies joined by a common centromere.

Explanation:

Homologous chromosomes may or may not be the same as each other because they are derived from different parents.

the pigment-producing cells of the epidermis are located in which layer?

Answers

Answer:

Basal Layer

Explanation:

Melanocytes are found in the basal layer of the epidermis. These cells produce a pigment called melanin, which is responsible for different skin color. Melanin is packaged into small parcels (or melanosomes), which are then transferred to keratinocytes.

after telophase i of meiosis, the chromosomal makeup of each daughter cell is

Answers

Answer:

haploid, and the chromosomes are each composed of two chromatids

Explanation:

going off what I remember

to stimulate muscle contraction acetylcholine is released from the

Answers

Answer:

motor neuron

Explanation:

How are a hypothesis and a theory similar?

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Answer:

A hypothesis is either a suggested explanation for an observable phenomenon, or a reasoned prediction of a possible causal correlation among multiple phenomena. In science, a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors.

please solve fast in 5 min​

Answers

Answer:

(C)

Explanation:

answer"A" can be cancelled as prokaryotic cells don't possess a nucleus.

answer"B" can be cancelled as animal cells don't have cell walls.

answer"D" can be cancelled if you know the cell theory.

Cellular respiration in plants does not require atmospheric oxygen because

Answers

Answer:

Oxygen produced during light reaction of photosynthesis is partially consumed during cellular respiration by plants and unconsumed oxygen is released in atmosphere. Thus plants produce oxygen in presence of light.

Answer:

it uses the oxygen generated in photosynethesis

Explanation:

Which two statements describe force?
A. Force causes an object's motion to remain constant.
B. A force can have mass or weight.
C. Force is the ability to change an object's motion.
D. A force can be a push or a pull.

Answers

Answer:

D. a force can be a push or a pull and A.

Please help me
will give the brainliest!
Please answer correctly​

Answers

A
Chain 1: oak trees —> moths —> small birds —> weasels

Chain 2: trees and bushes —> moths —> shrews


B
Voles


C
Since part of shrews’ alimentation are beetles and beetles sometimes eat earthworms, which eat dead leaves, a reduction of the dead leaves will reduce de population of shrews as their food will no longer be as abundant.


D
Level y is small on the first diagram because one organism feeds multiple other ones, while on the other diagram, multiple organisms feed other ones.

Hope it helps !

What the relationship between a glucose molecule and the products it makes during cellular respiration.

Answers

Answer:

During cellular respiration, a glucose molecule is gradually broken down into carbon dioxide and water. Along the way, some ATP is produced directly in the reactions that transform glucose. Much more ATP, however, is produced later in a process called oxidative phosphorylation.

During cellular respiration, glucose makes water, carbon dioxide, ATP, lactic acid, and ethanol. In the absence of oxygen, ethanol and lactic acid are formed from the glucose.

What is glycolysis?

 

Glycolysis is a process in which glucose breaks down inside a cell. Glucose makes pyruvate as an end product in this process. In the presence of oxygen, glucose breaks down into pyruvate and proceeds to the Krebs cycle. In this process, ATP, water, and carbon dioxide are released.

In the absence of oxygen, glucose is converted into lactic acid and ethanol. This is called fermentation and produces only 2 ATP from glucose. This is called anaerobic respiration.

         

When oxygen is present from glucose, nearly 36-38 ATP are formed. Pyruvate converts into acetyl CoA, and it enters the Krebs cycle. A complete oxidation of glucose takes place in the presence of oxygen.

Hence, in the presence of oxygen, 36-38 ATP is released from glucose, and in the absence of oxygen, lactic acid and ethanol are produced with 2 ATP.

To learn more about glycolysis, refer to the following link:

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a protein that forms an ion channel in a membrane is most likely to be

Answers

Answer:

Transmembrane protein

Explanation:

First answer should be correct

Nitrogen fixing bacteria play an important part in getting nitrogen
into the soil so that it can be used by plants.
True
False

Answers

True.
Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen (inorganic compounds usable by plants). More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.

A covalent bond forms due to _____.

a. Sharing of electrons

b. Transfer of electrons

c. Losing or gaining electrons

d. All of the above

Answers

C l hope it's right : )

PLEASE HELP ASAP!!
Adjust the length. How does the length of a pendulum affect its period?

Answers

Answer:

The longer the length of string, the farther the pendulum falls and therefore, the longer the period

Explanation:

How does pH affect plant growth?

Answers

Answer:

Soil pH directly affects the life and growth of plants because it affects the availability of all plant nutrients. Between pH 6.0 and 6.5, most plant nutrients are in their most available state. A nutrient must be soluble and remain soluble long enough to successfully travel through the soil solution into the roots.

where in eukaryotic cells does the calvin cycle take place?

Answers

Answer:

chloroplasts

The two parts of photosynthesis—the light-dependent reactions and the Calvin cycle—have been described, as they take place in chloroplasts.

Explanation:

The movement of water across a cell membrane that does not require
energy is called what?

Answers

The movement across a cell membrane that Dosent contain energy is known as discussion
osmosis
Diffusion: the Simple and the Facilitated
We call this evening-out moving “downhill”, and it doesn't require energy. The molecule most likely to be involved in simple diffusion is water - it can easily pass through cell membranes. When water undergoes simple diffusion, it is known as osmosis.
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