What is the theory of natural selection, and why does it occur in an organism?

Answers

Answer 1

Answer:

Natural Selection is survival of the fittest aka Darwinism. It basically states that the strongest survive and the weakest don't. Maybe it's through food shortages, bad weather, or predators. It occurs in an organism for population control. If there is too big of a population, then there will be a recourse drought and natural selection will do its thing again.


Related Questions

What makes carbon atoms ideally suited to their role in living things?
A.Their ability to form long chains of atoms
B.Their ability to form covalent bonds
C.Their ability to form liquid substances
D.Their ability to form compounds and with other elements

Answers

A. their ability to form long chains of atoms

thats the answer i got

How is oceanic crust formed?

Answers

Answer:

it is constantly formed at mid-ocean ridges, where tectonic plates are ripping apart from each other.

explain what natural selection is and how it occurs

Answers

Answer:

Natural selection is when an animal adapts to their environment to survive and produces more offspring. It occurs when the animal isn’t thriving in their environment and they make adaptions to where they can survive.

Explanation:

An example of natural selection is, a bird used to have a really thick and short beak. But to have more access to food they adapted to their environment and now have a long and skinny beak.

Hope this helps :)

True or False: Enzymes have an optimal or ideal pH level?

Answers

Answer:

All enzymes have an ideal pH value, which is called optimal pH. Under the optimum pH conditions, each enzyme showed the maximum activity. For example, the optimum pH of an enzyme that works in the acidic environment of the human stomach is lower than that of an enzyme that works in a neutral environment of human blood. All enzymes have an optimum pH that they work best at. Its often neutral pH 7, but not always.

Explanation:

i hope this is good?

What’s the answer? Fastest gets brainliest if it works!

Answers

Answer:

b) Water

Explanation:

Cellular respiration or aerobic respiration is a series of chemical reactions which begin with the reactants of sugar in the presence of oxygen to produce carbon dioxide and water as waste products.

I need help please !!!

Answers

Answer:

i cant see

Explanation:

what happens to the 90% of energy available if 10% moves on to the next trophic level

Answers

Answer:

Released as heat

Explanation:

The vast majority of energy in the ecosystem is used by the organisms to power chemical reactions in the cell.

Therefore, this energy is lost as heat when it powers metabolic processes, rather than being passed on to the next trophic level.

Which statements accurately describe osmosis? Check all that apply.


Water moves from areas of high concentration to areas of low concentration.

Water moves from areas of low concentration to areas of high concentration.

Too much water in a cell can cause it to shrink.

Too much water in a cell can cause it to swell.

Too little water in a cell can cause it to shrink.

Too little water in a cell can cause it to swell.

Answers

Answer:

- water moves from areas of high concentration to low concentration.

- too much water can cause it to swell

- too little water can cause it to shrink

Explanation:

What are viroids?
short strands of circular RNA
short strands of circular DNA
long strands of DNA coiled into circles
small circles of proteins

Answers

The answer is "short strands of circular RNA"

Salmonella typhi is a bacteria that reproduces by splitting into two
identical organisms. What type of asexual reproduction is this?
1Binary Fission
2O Vegetative Propagation
3Budding
4Fragmentation

Answers

Answer:

Binary fission

Explanation:

Binary fission is a type of asexual reproduction in bacteria in which two identical daughter cells arise from a new cell. It is asexual in the sense that it does not require two parents but only one.

According to this question, Salmonella typhi is a bacteria that reproduces by splitting into two identical organisms. This is evidently a type of BINARY FISSION reproduction by the bacteria cell.

Which is denser, 50 mL of water or 500 mL of water?

Answers

Answer:

50mL

Explanation:

Density is inversely proportional to volume.

This implies that, for the same mass of water, the higher the volume, the less dense it is.

By comparison 500ml is greater than 50ml

Going by the above analysis, 50ml will be less dense than 500ml because it is smaller.

match the statements below with the appropriate term. Write the letter in the appropriate space.

Answers

Answer:1. A revenue not yet recognized; collected in advance.

B Unearned Revenues

2. Office supplies on hand that will be used in the next period.

A Prepaid Expenses

Explanation:

Pea crabs live their entire lives inside of an oyster. They live inside the oyster's gills and feed on the
food that filters in. Often as the oyster grows, its muscles and gills will become weak. This symbiotic
relationship is an example of
O Parasitism
O Predation
O Mutualism
O Commensalism

Answers

Commensalism, the crab benefits from the oyster but the oyster is neither benefited nor harmed.

Just answer 6 and 7 please I just answer what u can

Answers

Answer:

They are not verbal-- something less in the impostance of getres tey more than it.

Explanation:

An essay is, generally, a piece of writing that gives the author's own argument — but the definition is vague, overlapping with those of a paper, an article, a pamphlet, and a short story. Essays have traditionally been sub-classified as formal and informal

Answer:

someone answered right when i was about to answer wow

Explanation:

- Which of the following is NOT a molecule?
b. silver
a. water
c. carbon dioxide
d. sugar

it’s A

Answers

Answer:

sugar

Explanation:

sugar is a combination of different molecules

answer : d. sugar
explanation : it’s made up of many molecules


What factors might cause a kelp forest to disappear?

Answers

Answer: Natural Causes and Human Activities

Explanation:

The factors influencing kelp forest stability are diverse: kelp harvesting; grazing by fishes, sea urchins, and crustaceans; plant competition; storms; sedimentation; and pollution; global warming and the association with rising ocean temperatures.

Answer:

does this help ?

Explanation:

a large patch of warm water developed off the coast, creating a catalyst that has further changed this underwater environment. The persistent warmer sea temperatures stress the kelp forests to the point that growth and reproduction have slowed dramatically and caused damage to remaining fronds and tissue.

Where would you find DNA in plant and animal cells?

Answers

Answer:

Some DNA is present within the mitochondria of animals, plants, and fungi and within the chloroplasts of plants.

Explanation:

A in Bio last year.

Answer:

The DNA is located in the Nucleus in both plant and animal cells

List the three parts of the cell theory

Answers

Answer:

-  All organisms are composed of cells. -  Cells are alive and the basic living units of organization in all organisms. -  All cells come from other cells.

Explanation:

:)

The three parts of the cell theory are as follows:

All living things are made up of one or more cells.Cells are the basic and functional unit for living things.All cells come from pre-existing cells.

CELL THEORY:

The cell theory is a widely accepted theory that is made up of three components as proposed by Mathias Scleiden, Theodor Schwann and Rudolph Virchow in the 1890's.

The three parts that makes up the cell theory are as follows:

All living things are made up of one or more cells.Cells are the basic and functional unit for living things.All cells come from pre-existing cells

Learn more: https://brainly.com/question/1468725?referrer=searchResults

Select the answer below that describes the process of photosynthesis

photosynthesis is when humans convert their food into energy
photosynthesis is when plants convert sunlight, water and carbon dioxide into energy
photosynthesis is when plants convert sunlight, water and oxygen into energy
photosynthesis is how plants grow

Answers

Photosynthesis is when plants convert sunlight, to water, and carbon dioxide into energy

Answer:

Photosynthesis is when plants convert sunlight, water, and oxygen into energy.

photosynthesis is how plants grow

Explanation:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, In most cases, oxygen is also released as a waste product. Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere and supplies most of the energy necessary for life on Earth.

Hope this helps!

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background info: potato cells were added to different solutions of NaCl and it has to do something with Osmosis

Answers

Answer:

The water moving form inside the potato to the outside, making it lose mass.

Explanation:

I hope this is right.

Peter loves music. He believes that he does his homework better and faster when he listens to music. His parents say that music is distracting when studying.
a. What is the problem?

Answers

Answer:

I think the problem is that  Peter is not studying; he is doing his homework.

Studying means he is preparing for a test and learning something. Homework is something you already know.

Food contains what that must be released to be used?

Answers

Answer: Nutrition

Explanation: Nutrients are the essential nourishments for growth and the maintenance of life.

Need 11 facts about solar eclipse

Answers

1-The longest a total solar eclipse can last is 7.5 minutes.

2-The width of the path of totality is usually about 160 km across and can sweep across an area of Earth's surface about 10,000 miles long.

3-Almost identical eclipses occur after 18 years and 11 days.

4-This period of 223 synodic months is called a saros.

5-Each year there are between 2 and 5 solar eclipses.

6-The total solar eclipse, when the Moon completely obscures the Sun and leaves only the faint solar corona, is known as a Totality.

7-Total solar eclipses are rare, happening only once every 18 months.

8-Total solar eclipses produce harmful rays that can cause blindness.

9-If any planets are in the sky at the time of a total solar eclipse, they can be seen as points of light.

10-During a total solar eclipse, conditions in the path of totality can change quickly. Air temperatures drop and the immediate area becomes dark.

11- A solar eclipse can only occur when the Moon is close enough to the ecliptic plane during a new moon

Answer:

1-The longest a total solar eclipse can last is 7.5 minutes.

2-The width of the path of totality is usually about 160 km across and can sweep across an area of Earth's surface about 10,000 miles long.

3-Depending on the geometry of the Sun, Moon, and Earth, there can be between 2 and 5 solar eclipses each year.

4-A total solar eclipse can happen once every 1-2 years. This makes them very rare events.

5-Almost identical eclipses occur after 18 years and 11 days. This period of 223 synodic months is called a saros.

6-During a total solar eclipse, conditions in the path of totality can change quickly. Air temperatures drop and the immediate area becomes dark.

7-There is another type of solar eclipse, known as a hybrid eclipse, which shifts between a total and annular eclipse depending on where you view it from on Earth. These are comparatively rare.

8-The speed of the Moon as it moves across the Sun is approximately 2,250 km (1,398 miles) per hour.

9-If you are at the North or South Poles, you cannot view a total solar eclipse.

10-In ancient times, people thought an eclipse was a sign that the gods were angry or that bad things were about to happen.

11-During a total solar eclipse day time looks more like twilight.

Explanation:

Your welcome.

Select the correct answer.
George owns a pet dog. One day, he notices that the dog has become very aggressive, and bites anyone who comes close. Which parameter of
health is most likely the cause of the dog's behavior?
OA general
OB.
historical
Oc. physical
OD. Psychological

Answers

Answer: D I believe

Answer:

psychological..............

how does coriolis effect affect the climate zones in the world? PLEASE HELP! I WILL GIVE BRAINLY TO PROPER ANSWER!

Answers

Answer:

Please Mark as Brainliest

Explanation:

The development of weather patterns, such as cyclones and trade winds, are examples of the impact of the Coriolis effect. ... As warm air rises near the Equator, for instance, it flows toward the poles. In the Northern Hemisphere, these warm air currents are deflected to the right (east) as they move northward.

The Coriolis effect was presumed to be the reason for the rotation of low pressure areas which is anticlockwise in the Northern Hemisphere and Clockwise in the Southern Hemisphere. The problem with this is that it would carry the winds to the east in either hemisphere because of the velocity of the surface being faster near the equator going east bound at the equator at just over 1,000 miles per hour. The velocity drop by 35 degrees north or south is to about 860 mph. The only problem with this concept is that it doesn’t sustain a recurving circular flow. South bound winds are slower and would carry to the west.

There is only one structure that explains the full vortex structure of storms. That structure is an Electromagnetic particle vortex. Sorry folks the Coriolis effect is one of those things that needs sent to the dustbin of history (Trash for Americans).

The weather plasma flow linkages are being well studied now. There is no reason to continue to teach Coriolis Effect regards rotation of storms. It does have effect in things like the massive ocean currents and the generalized flows on earth of winds but it doesn’t affect rotation of storms. Even there we are learning that motion north and south from the equator is primarily electrical in nature.

Many birds live in mountainous temperate forest ecosystems. Above the tree line on mountains, however, the ecosystems change. Few birds are found there. Many factors contribute to the lower number of birds seen above a mountain’s tree line. Which of these factors is abiotic? _________________________________
(limited food, frequent high winds, high flying predators, no trees for shelter)

Answers

im pretty sure it’s no trees for shelter!

Describe how an enzyme’s structure affects its function:

Answers

Answer:

Most enzymes are proteins and therefore their function is specific to their structure. Enzymes function as a catalyst to increase the rate of virtually all the chemical reactions that take place in a living system

Explanation:

Which property of water allows water to be conducted up to the leaves?

Answers

Answer:

Cohesive nature of water

Explanation:

Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it's way all the way up to the branches and leaves.

Answer: B

Explanation:

What is an active site?
A )a gland that secretes a particular enzyme
B) a part of an enzyme molecule into which a substrate molecules fits
C)a part of the substrate to which an enzyme molecule attaches
D)a place in the body where an enzyme works

Answers

Answer:

B is correct.

Explanation:

What type of cell transport is shown in the figure below?

Answers

Answer:

facilitated diffusion

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Can somebody plz help answer some grade6 science questions? plz help will award brainliest (Help me with this test question) Lines l and m are intersected by transversal t and l || m. Lines l and m are vertical with l to the left of m. Transversal t intersects them both slanting down and right. The angles formed above t with l and m from left to right are angles 1, 3, 5, and 7. The angles formed below t with l and m from left to right are angles 2, 4, 6, and 8. Select all the angles that are supplementary to 1. Group of answer choices 3 4 6 5 7 8 Help help help please in the oppening sentences of the passage ('now i know ... color of my hair") the author refers to Alice walker priarily to 8.h=7108 18 what is h I need help ASAP this is a huge grade Which graph below shows the solution set for the inequality b 5?pls help meeeeeeeee Western University has only one womens softball scholarship remaining for the coming year. The final two players that Western is considering are Allison Fealey and Emily Janson. The coaching staff has concluded that the speed and defensive skills are virtually identical for the two players, and that the final decision will be based on which player has the best batting average. Crosstabulations of each players batting performance in their junior and senior years of high school are as follows: Allison FealeyOutcome Senior JuniorHit 15 75No Hit 25 175Total At-Bats 40 250 Emily JansonOutcome Senior JuniorHit 70 35No Hit 130 85Total At-Bats 200 120 Western University has only one womens softball scholarship remaining for A players batting average is computed by dividing the number of hits a player has by the total number of at-bats. Batting averages are represented as a decimal number with three places after the decimal.a. Calculate the batting average for each player in her junior year. Then calculate the batting average of each player in her senior year. Using this analysis, which player should be awarded the scholarship? Explain.b. Combine or aggregate the data for the junior and senior years into one crosstabulation as follows:Western University has only one womens softball scholarship remaining forCalculate each players batting average for the combined two years. Using this analysis, which player should be awarded the scholarship? Explain.c. Are the recommendations you made in parts (a) and (b) consistent? Explain any apparentinconsistencies I will give brainliest to whoever answers this! If a number is odd, then it has a remainder of 1 when divided by 2.Which is the hypothesis of the conditional? What is 20% of a $30 haircut Which religion is being described in this passage?"This religion, which emphasizes detachment from worldly goods, originated in India and missionaries spread it to Chinaother parts of Asia."O BuddhismO JudaismO ChristianityShintoismIslamHinduism82012 I dont get this, can anyone help? What is the slope of the line? (Picture) What's the diffrence between division manager and regional manager? please i need help i don't understand the difference. Point S is between points R and T on RT. Use the information to write an equation in terms of x. Then solve the equation and find RS, ST, and RT.RS = 2x - 8ST = 3x - 10RT = 17RS =ST=RT= POSSIBLE POWhat actor would cause location F to have a colder yearly climate than any other location?A The hypotenuse of an isosceles right triangle has length 4. How long is each leg? The perimeter of the rectangle below is 54 units. Find the value of x