Answer:
A.
Explanation:
Because the trait undergoes a secondary loss; it has been there but it doesn't always appear in all generations.
Answer:
Yes a population can only handle a certain amount of people .
Explanation:
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It is potential energy is converted into apt energy for use in living things.
The amount of water on the planet is fixed; it neither increases or decreases. Glaciers are sheets of moving ice. This water to form these extensive sheets must come from somewhere. The water comes from the most extensive store on the planet; the oceans. Ice Ages always corresponds to periods of low sea level because much of the ocean water is is land locked as glaciers.
The element carbon makes long chains forming, single, double or triple bonds with itself.