Distributed through time or
along the line
Answer:
No it cannot it is impossible for it to spread to humans
Can be a number of things, rain fall quota, climate, population, vegetation..any of those.
ANSWER: B, killifish
REASONING: A secondary consumer consumes animals that eat only plants. Larvae and copepods do not fit these descriptions, because they do not eat animals. Snapper do eat animals, so do not fit the description either. Killifish eat small animals that do eat plants.