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Allisa [31]
3 years ago
6

What is natural selections role in evolution

Biology
1 answer:
Nezavi [6.7K]3 years ago
3 0

Explanation: The basic idea of biological evolution is that populations and species of organisms change over time. ... Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time.

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Question 4: Suppose there were changes in the habitat that caused this actual value. What might a
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Answer: Over time, the amount of precipitation decreases by 20 percent. It will affect the habitat because those species adapted to drier environments will replace species less suited to the new climate.

Explanation:

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3 years ago
Why do you think there is often only a short amount of time to evacuate an area before an earthquake
fgiga [73]
Basically no one knows that an earthquake is coming until it's happening.
People don't have time to evacuate because they don't know that an earthquake is going to take place , in other words the earthquake takes them by surprise.
3 0
3 years ago
Two consecutive even positive integers have a product of 2,400. What is the smaller of the two numbers?
Flura [38]

Answer: <u>Option C; 48</u>

Explanation:

Let one number = x

Other number = x+2

According to question-

[x] [x+2] = 2400

x^{2} + 2x - 2400 = 0

Solving this equation, we get-

[x - 48] [x - 50 ] = 0

x = 48 or 50

Since 48 is the smaller number here, answer is option C

8 0
3 years ago
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What do sclerenchyma and collenchyma have in common? They are both thin-walled. They are both dead cells. They both function for
kakasveta [241]

Answer:

They both function for support

Explanation:

Collenchyma cells gives support to extra structural regions as well as sclerenchyma are responsible for the support of plants.

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3 years ago
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Cholesterol belongs to the groups of lipids called
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<span>cholestrol is part of sterols / steroids which is one of the 4 classes of lipids
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other sterols are sex-trait hormones like testosterone etc.

other lipid groups are fats (glycerol and fatty acids), phospholipids (phosphate head and faitty acid tails), and waxes (contain alcohol group) </span>
3 0
4 years ago
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