Answer:
C. Hypothesis
Explanation:
Hypothesis is a proposed explanation for a certain occurrence and when the explanation is conclusive, then it becomes a theory.
The answer to your outstanding question is 3
What substances are involved in controlling the production of sperm and eggs in humans? Hormones.
Animals use territorial behavior to adapt to new surroundings. it helps them stay stronger when they have to compete for food and it also helps with overcrowding and overpopulation
