I’m almost 100% sure it’s D, because environmental factors can induce a mutation. A mutation can be beneficial but it can also be harmful, so it’s neither B or C, and it can’t be A, because mutations can come from natural selection as well. So it’s D.
The answer is : randomization was not used in sample selection. The major difference between experimental and quasi-experimental designs is lack of randomization in sampling selection.
Answer:
pluto
Explanation:
the others are formed from other things
Answer:
I'm pretty sure they do so it's yed
D) It can only be used in areas with specific kinds of rivers.
