Answer: humans
Explanation: Humans hunt animals to the point of extinction
The fittest organisms tend to survive so they continue to populate
the organisms being hunted become extinct so the population of their species decreases immensely
The name given to a group of similar cells that perform a special function together is tissue.
Same genus is more closely related. The farther down the list Phylum-Class-Order-Family-Genus-Species you go, the more closely related are the species in that taxon.