Natural selection is a mechanism for evolution.
O True
O False

Answers

Answer 1
the answer is true. Bc the stronger they are the more likely they will survive.
Answer 2

true

Explanation:

Its true because something has to die for others to thrive.


Related Questions

At what stage in meiosis does a cell become haploid gametes?

Answers

Telophase II

Explanation:

i hope it helps you

If Jenny's father has blood genotype 1A1A, and her mother's bloodtype is Type O, what blood genotype would
Jenny have?

Answers

Jenny might have AB.

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 did Bill climb to get out of the Nye Lab?

Answers

Answer:I think it is A DNA molecule 5

sorry if I am wrong

   

Answer:

DNA

Explanation:

i think

Diarrhea is defined by loose, watery stool (poop.) Diarrheal diseases kill millions of people worldwide every year. Describe how a diarrheal disease might lead to death.

Answers

Answer:

dehydration.

Explanation:

the body is loosing more fluid than it is able to keep in and extreme cases result in death

3. Imagine that you are a drop of blood. What path would you follow through a
human's body as you travel from the left little toe, through the heart, and into the
right big toe?
1. Start in the
a. Heart...
b.
C.
d.
e.
f.
g.
h.

Answers

Answer:

a. Heart...

b. pulmonary artery

C. lungs

d. pulmonary vein

e. heart

f. aorta

g. arteries

h. big toe.

Explanation:

First I will go from the heart to the lungs through pulmonary artery in order to purification from carbondioxide and loaded oxygen. After that, I return to the heart through pulmonary vein and the heart pump this blood to the aorta which is a big blood vessel that branched into small arteries that reaches to every cell of the body and through these arteries I reach the big toe of the foot.

An animal cell with 28% water content is placed in 3 % sugar solution. What would be your observation?

Answers

Answer:

osmosis

Explanation:

The animal cell placed in the sugar solution which is more dilute than its cytoplasm would cause the cell to eventually swell and burst.

How long does the revolution of the moon around earth takes

Answers

Answer:

27 Days

Explanation:

The moons takes 27 days to orbit the earth

In eukaryotic cells, DNA is packaged with proteins into structures called
chromosomes. What advantage do chromosomes provide the cell?
a. They ensure equal division of genetic material when a cell divides.
b. They allow random distribution of genetic material when a cell divides.
c. They allow all genes to be expressed at the same time.
d. They eliminate the need for a nuclear membrane.

Answers

Answer:

A

Explanation:

A black hybrid rabbit is crossed with a white purebred rabbit.

What is the probability of an offspring being black?
A. 25%
B. 50%
C. 75%

Answers

Answer

A. 25%

Explanation:

This is because the black hybrid would be 50% one breed and 50% another breed. Then the white purebred is 100% one specific breed. So by mating, all of those breeds that the parents have all reduce by 1/2 for the offspring.

25% I’m pretty sure :)

When humans burn fossil fuels, ________________ is released back into the atmosphere.

Answers

Answer:

Carbon Dioxide

Explanation:

Answer:

Carbon Dioxide

why is kidney cell different from other cells in your body ? what role do stem cells play?

Answers

Answer:

1. Cells have different shapes because they do different things. Each cell type has its own role to play in helping our bodies to work properly, and their shapes help them carry out these roles effectively. The following cell types all have unusual shapes that are important for their function. 2. Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two main types of stem cells: embryonic stem cells and adult stem cells

Explanation:

Kidney cell is different from other cells in your body such that they are

involved in the following functions due to unique structures and

mechanisms present.

FiltrationIon homeostasisBlood pressure control.

Stem cells are majorly involved in the repair of body cells and tissues

during injuries or when worn-out. This is as a result of them having the

ability to become specialized.

Read more about Cells here https://brainly.com/question/13920046

How does the decrease in biodiversity impact an ecosystem?

Answers

Answer:

because the more alike species are The more they have to adapt to try and compete with one another So the more different a species is the less they have to compete

Answer:

the decrease in biodiversity may cause a significant reduction in the productivity of the ecosystem. The loss of biodiversity means genetic variations are lost and the overall genetic pool reduces.

Explanation:

Egde 2022

Please help!!!!!!!! Will mark brianlist ASAP

Answers

I'm going with C. It may be wrong but I think it's C.

Answer:

the answer is D.........

list different causes of disease​

Answers

Answer:

Bacteria

Viruses

Fungi

Parasites

Explanation:

The cell theory is a scientific explanation about the characteristics of cells in living things discovery of cells occurred in the 1600s which piece of equipment my students in science class used to investigate the cell theory

Answers

Answer:

Then, what is the question????

In 1665, Robert Hooke, a scientist published Micrographia, a book full of illustrations and descriptions of organisms observed under the recently invented microscope, hence Hooke's discovery of the cell was successful with the invention of the microscope.

What is Microscope?

A microscope is defined as a laboratory instrument used to examine objects that are too small to be seen by the uncovered eye. Microscopy is the science of examining small objects and structures using a microscope. The word microscopic means invisible to the eye unless aided by a microscope.

Without the microscope, we would not know about the existence of cells or how plants breathe or how rocks change over time. Cell theory was discovered by Robert Hooke in 1665 with the help of a microscope.

Thus, in 1665, Robert Hooke, a scientist published Micrographia, a book full of illustrations and descriptions of organisms observed under the recently invented microscope, hence Hooke's discovery of the cell was successful with the invention of the microscope.

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A forest fire caused by lightening destroys an entire forest. The population of deer was drastically reduced within the forest leading to a decrease in genetic variation. This situation is an example of -

Mutations
Gene Flow
O Genetic Drift
Divergent evolution​

Answers

Answer:

I'm like 90% sure that it is Gene flow

Explanation:

When the arm extends (straightens), which muscle contracts?

Answers

the extensor muscle, aka the tricep

Which of the following explains why an apple looks red? The apple reflects red light and absorbs all other visible wavelengths. The apple absorbs red light, and reflects all other colors of light.. The apple is absorbs all visible wavelengths, but absorbs red light better The apple is reflects all light that hits its surface.​

Answers

Answer:

The apple reflects red light and absorbs all other visible wavelengths

Explanation:

The apple is only reflecting the color red and is absorbing the other colors of light (wavelengths)

The correct explanation why an apple looks red is that the apple reflects red light and absorbs all the other visible wavelengths. Thus, the correct option is A.

What is Absorption and reflection of light?

Light absorption is the process in which the light ray is absorbed by the matter and converted into a form of energy. In an atom, the electrons vibrate at a specific frequency, then this is called as the natural frequency.

Reflection is a phenomenon of light. When a ray of light approaches a smooth polished surface such as metal and the light ray bounces back, it is called the reflection of light. The incident light ray which land on the surface is reflected off from the surface. The light ray that bounces back is called the reflected ray.

Therefore, the correct option is A.

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What diagram demonstrates how crossing-over contributes to genetic variety during meiosis?

Answers

Answer:c

Explanation:trust me

The diagram that demonstrates how crossing-over contributes to genetic variety during meiosis is diagram C.

Crossing over refers to the recombination or interchange of genetic material.

This process (crossing over) occurs between non-sister chromatids during meiosis.

Crossing over specifically occurs in the prophase I of meiosis.

In conclusion, the diagram that demonstrates how crossing-over contributes to genetic variety during meiosis is diagram C.

Learn more in:

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Which characteristic of an animal species would make it a good candidate for domestication as a companion animal?


coming from an exotic environment

complex feeding requirements

aggressiveness

good social qualities

Answers

Answer:

good social qualities

Explanation:

Companion animals can also be called pets. Companion animals are kept by humans for purposes of protection and pleasure. Companion animals are usually animals with a gentle nature and good social qualities. Edge 2021

How was early Earth's atmosphere different from today's atmosphere?​

Answers

Answer:

The early Earth was very different from our Earth today.

Explanation:

Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air (Figure 12.13). These gases created a new type of atmosphere for Earth.

Answer:

The atmosphere we enjoy today is radically different from the atmosphere that formed with the Earth billions of years ago. ... As the Earth cooled enough to form a solid crust (4.4 billion years ago), it was covered with active volcanos. These volcanos spewed out gasses, like water vapor, carbon dioxide and ammonia.

How has the Earth's atmosphere changed over time?

Water vapor, carbon dioxide, methane, ammonia, and other gases similar to the ones produced by volcanoes today were expelled. Over a vast amount of time, millions of years, the earth gradually cooled. ... From these clouds, the oceans formed and the oceans absorbed a lot of the carbon dioxide in the atmosphere.

Explanation:

Plz mark me brainliest

What number of cells is in metaphase

Answers

there is only one cell

Answer:

1

Explanation:

The cell doesn't split until telophase, so there's still only one during metaphase. Chromosomes are still lining up during this phase.

Standing at the same location, which organism would have the GREATEST gravitational attraction to the earth?

Answers

Answer:

D

Explanation:

other guy said it. i trust them.

help please !

1.) the closer a biome is to the equator , the more we would expect it to be
a. warmer & wetter
b. cooler & wetter
c. warmer & drier
d. cooler & drier

2.) the tundra biome & the desert biome are both very dry , but
a. the desert is always hot
b. the desert has a wider temperature range
c. the tundra had a wider temperature range
d. they are also similar in temperature

Answers

Answer:

1) A 2) C?

Explanation:

1) Most tropical places lay around the equator 2) Tundra's can get cool

plzzzzzzzzzzzzzzz help

Answers

Answer:

c.

Explanation:

It is c) since it's marketing something that they have seen you look up or something that it is related to searches you have made.

Which two parts of sedimentary rocks formation include the breakdown and carrying away of existing rock

Answers

Answer:

weathering

erosion

Explanation:

Weathering can be explained as the

breaking down of rocks as well as minerals or dissolving it on the surface of the earth. After the rock has been broken down then the bits of the rock can be transported away in a process known as " Erosion". The agents of

weathering and erosion could be water, salt, animal as well as plants.

It should be noted that the parts of sedimentary rocks formation that include the breakdown is weathering while the parts of sedimentary rocks formation that include carrying away of existing rock is erosion.

Answer:

weathering

and

erosion

How does the mercalli scale differ from the richter scale

Answers

Answer:

The Richter scale measures seismic waves while the Mercalli scale measures things that humans can see and the intensity people can feel.

HELP ME

this is a K12 question


The weather is warm and dry.

Which change would a cold front bring?



rain or thunderstorms


extended period of rain or snow


dry air and sunny skies


several days of gray skies

Answers

Answer:

rain or thunderstorms

Explanation:

Answer: It brings rain or thunderstorms.

Hope this helps!

Why can information only pass in one direction across synapse?? pls help !!

Answers

A Nerve electrical impulse only travels in one direction. There are several reasons nerve impulses only travel in one direction. The most important is synaptic transport.
In order for a "nerve impulse" to pass from cell to cell, it must cross synaptic junctions. The nerve cells are lined up head to tail all the way down a nerve track, and are not connected, but have tiny gaps between them and the next cell. These tiny gaps are called synapses.
When you get a nerve firing, you have probably heard that it is an electrical impulse that carries the signal. This is true, but it is not electrical in the same way your wall outlet works. This is electrochemical energy. Neurotransmitters are molecules that fit like a lock and key into a specific receptor. The receptor is located on the next cell in the line. When the neurotransmitter hits the receptor on the next cell in line, it signals that cell to begin a firing as well.
This will continue all the way down the length of the nerve track. In a nutshell, a nerve firing results in a chain reaction down the nerve cell's axon, or stemlike section. Sodium (Na+) ions flow in, potassium (K+) ions flow out, and we get an electrochemical gradient flowing down the length of the cell. You can think of it as a line of gunpowder that someone lit, with the flame traveling down the length of it. Common electrical power is more like a hose full of water, and when you put pressure on one end, the water shoots out the other.
Therefore, nerve impulses cannot travel in the opposite direction, because nerve cells only have neurotransmitter storage vesicles going one way, and receptors in one place.
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Manuel eats lunch in the cafeteria every day. How does his digestive system make use of the lunch he eats? aA. It changes the food into cells that protect the body from illness. bB. It converts food into oxygen that is absorbed into the blood. cC. It breaks down some food into usable material for the body and discards the rest. dD. It breaks down food into the chemicals needed by the body to regulate temperature. The Fast as Light Shipping company charges the following rates. Weight of the item being sent Rate per 100 Miles shipped 2kg or less. $0.25 Over than 2 kg but not more than 10 kg $0.30 Over 10 kg but not more than 20 kg. $0.45 Over 20 kg, but less than 50kg. $1.75 Write a program that asks for the weight of the package, and the distance to be sent. And then displays the charge. A layer of water x m thick which lies x m above the bottom of the tank will be rectangular with length 8 m. Using similar triangles, we can see that it will have widt of_____m Sort 7/10,1/2,3/5,3/4 from least to greatest . What effect or feeling does Mark Twain create through his use of omniscient thired-perosn point of view in his passageA. SeriousB. HumorousC. Suspenseful D. Sad what a nucleotide is helpp meeeeeeee plsssssa Which of the following characteristics is a feature of all planets? They all have atmospheres. They all make their own light. They all have rings of rock and gas. They all are round and made up of rock. were is the first place you should look on nutrition facts label Which of these statements is TRUE according to the chart shown?A)The retail sales per capita in 1997 was higher in Alabama than in the restof the countryB)The farm employment rate in 1997 was identical in Alabama and in theUnited States as a whole.The percent of firms owned by women was lower in Alabama in 1997 thanin the rest of the country.The percent of firms owned by minorities was higher in Alabama in 1997than in the U.S. as a whole.D)14)Which of these types of unemployment is characterized by peaks of joblessness at specific t Adidea Corp. regularly buys merchandise from vendors. It just purchased 1,000 units on credit from one of its vendors. How will the company record this transaction?The company will record the purchase as a debit to the inventory account and a credit to the ________ account. Which of the expressions are equivalent to the one below? Check all that apply. 4 (8 + 3)A. (4 8) + 3 B. (8 + 3) 4 C. 4 (3 + 8) D. 4 8 + 4 3 Compute 292,000 divide 100. can you please help me The period of economic trouble that occurred in the United States and other countries during the 1920s and 1930s is called the Three groups of a number plus two. Tom recently bought a pair of headphones, XOB 10, from Blue for $99. Within a month, Tom's friend, Leo, bought a brand new pair of headphones XGD 20, released by Soundz, online at a reduced price of $86. Tom tried the XGD 20 and found it to be significantly better than the XOB 10. In this scenario, Tom is most likely to experience: A) cognitive dissonance B) self-actualization C) problem recognition D) external information search E) criteria evaluation What is an equation for the translation of y = |x| down 8 units? You have graduated from college but unfortunately have $39,000 in outstanding loans. The loans require payments of $3,435 per year, which covers interest and principal repayment (that is, the loan has the same basic features as a mortgage). If the interest rate is 4 percent, how long will it take you to repay the debt Find the point slope equation of the line through (0,7) with slope of 6.