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k0ka [10]
3 years ago
8

What is the mechanism of natural selection?

Biology
1 answer:
borishaifa [10]3 years ago
8 0
The answer is D. The natural selection is a theory which illustrates the gradual process of evolution in the population due to the change of environment. The key point is the mutation (variation) exists in the population before the environment changing. For C, if the environment does not change, though the adaptation is useful to environment, it will not be selected. Because the organisms without the adaptation will not die.
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Our muscles are attached to our skeleton to help us move. If we had no skeleton then  our muscles would hang limply, making it harder for us to move.
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How many times must the calvin cycle turn to produce one molecule of glucose?
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Every 3 turns 1 molecule is made
3 0
4 years ago
When economic conditions are favorable, more effort can be put into synthetic materials that satisfy desires and not just needs.
maxonik [38]

Answer:

True

Explanation:

The correct answer would be<u> true.</u>

<em>A favorable economic condition in an area means that a large percentage of the population of the people in the area already have their basic needs met. According to Abraham Maslow, when basic needs are met, human needs graduate from basics to more sophisticated ones. Consequently, production efforts can be put into producing material that satisfies desires and not just needs.</em>

5 0
3 years ago
5. How can we say that added sugar is not necessary for our health (it's not), when we learned that
natita [175]

The body does not require any added sugar to stay healthy. Hunters/gatherers and our ancestors consumed fruits and milk that are natural sugar to obtain energy.

<h3>What is the difference between added sugar and natural sugar?</h3>
  • Natural sugars are found in unprocessed food such as fruits and milk.
  • Fruits contain fructose and milk contains lactose.
  • On the other hand, added sugars are the artificial sweeteners that we often add to our daily diet in the form of white sugars and caloric sweeteners.
  • From the perspective of health, it is always better to opt for natural sugar that keeps our body stable energy and stable metabolism.
  • Added sugars are harmful when consumed in higher quantities.

Hence, added sugar is not necessary for our health when we have learned that aerobic cellular respiration uses glucose as a fuel source that can be obtained from natural sugar.

To learn more about natural sugars refer:

brainly.com/question/1723985

#SPJ2

8 0
2 years ago
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Which of the following is an observation made by Darwin that supports his theory of natural selection?
SCORPION-xisa [38]
More organisms are born than can survive.
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3 years ago
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