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aalyn [17]
4 years ago
9

What type of variation is necessary for natural selection to occur

Biology
2 answers:
Rzqust [24]4 years ago
4 0
Genetic Variation
Natural selection results in organisms that are better suited to their environment are able to pass on genes to create strong offspring
zimovet [89]4 years ago
4 0

Correct Answer:

C. Genetic Variation

3 of 3 points

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Explain why it is important to be skeptical of statistical results reported in the media.
wlad13 [49]

Answer:

Firstly, many statistics are taken from a small group of people used to represent the general population. Say a news channel reported that 81% of teenagers in America were planning on going to a four-year college. This statistic is most likely taken from a randomly selected group of teenagers, and calculated with a margin of error. Because after all, it's nearly impossible to survey every single teenager in America. This can lead to some statistics that are not really representative of the actual percentage of people. This only gets more likely the larger the general population being "surveyed" is. Another reason is that the media is not always truthful with statistics. Things can be altered and not many people will notice. Hope this helps!

3 0
3 years ago
Air pollution ____
Flauer [41]
Can cause acid rain because the chemicals mix with the water vapor
8 0
3 years ago
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What is the largest gland in the body?
Yakvenalex [24]
The answer is D, the liver.
6 0
3 years ago
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There is about 1,000 times as much DNA in a human cell as in a bacterial cell, but only 5 times as many genes. What accounts for
chubhunter [2.5K]

Answer:

Phenotypic plasticity

Explanation:

Humans have evolved over thousands of years to adapt to various environmental changes. For example, when we are in an environment that requires certain level of adaptation our off spring often formalizes epigenetic traits that lows them to overcome small changes in the environment. Over time certain genes that are turned on may remain on and eventually the ones that are off remains off. This give rise to some genes that "don't work"  after millions of years of such evolution we end up with a complex genome with more DNA than "working genes".

3 0
3 years ago
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Diffusion, Osmosis and Enzymes
Nana76 [90]

The given statements can be matched as following:

a)The diffusion of water from a high concentration to a low concentration  - Osmosis

b)Lowers the amount of energy needed to perform chemical reactions - Enzymes

c)When you breath O2 passes into your blood stream while CO2 passes out of your blood stream -Simple Diffusion

d)Involved with, but does not become a part of chemical reactions -Enzymes

e)Small molecules with no charge can move through semi-permeable membranes by this process- Simple Diffusion

Explanation:

a) Osmosis is generally defined as the process by which water is transported from a region of Higher concentration to the region of Lower concentration.

b) Enzymes are well known to reduce the amount of energy required or needed for a chemical reaction to take place.

c)The process by which oxygen passes through our blood stream and carbondioxide passes through the other is known as simple diffusion process.

d) Enzymes are ones that actively gets involved in the chemical reaction but they will never become a part of that chemical reaction.

e) Diffusion is the process by which very small molecules that carries no charge moves through semi permeable membrane.

5 0
3 years ago
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