The answer is B.
In general, the best way to find scientific answers to questions is to do research. Sometimes, tests aren't always exactly repeatable, and especially not in a scenario like the one given.
Answer:
Chemical communication plays an important part in the lives of insects, and particularly in lives of those that live in groups or social organizations. Aggregation pheromones are designed to bring individuals together into groups which may be temporary in sub-social insects, or permanent in social insects.
Explanation:
Bacteria because it mutates very quickly compared to humans :)
Answer:
C for the 2nd one
and B for the 3rd one
The answer for this question is b :)