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Answer:
A. Mammal
Explanation:
We are a mammal because we have hair, we produce milk, give birth to live offspring (kids), and we are warm blooded.
The mating is the first event that happens in the development of a new organism because you may have A lion and a word you know that's not possible that would be a possible new organism that have not been formed yet but the mating would be the first thing that would happen
It affect the water flow and how much of the water turns into gas
