Answer:
the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.
Explanation:
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Answer:
A way a disease that is fatal can stay in the population is if its hereditary. Such as, it allows the carrier to live long enough to have children, which have the chance to either get it, or pass it on to their children.
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Explanation:
Well a<span> sperm fertilizes an egg to form a zygote.</span>
<span>The reaction to it promotes social unity.</span>
