Answer:
Mutation
Explanation:
A mutation is a change in the sequence of genetic letters, called bases, within a molecule of DNA.
2.5 million years ago the first genus Homo evolves.
Parasites will grab on the the host to generate more parasites, and when the cell bursts, the parasites will shoot out in every direction to grab more prey.
I would say the answer would be D.
Because: If a river is dammed then there is little to no flow going downstream. This will effect the life downstream and also change its conditions.
I Hope This Helped!
