Answer:
B
Explanation:
They altered rocks into soil that was able to support simple plants such as grasses. This is an example of altering the environment around them to make it more habitable for other species.
The answer is dependent variable.
D. Sedimantory, metamorphic
If it was wrong I’m very sorry
1. Reduces the chromosome number from diploid to haploid
2. Ensures that each of the 4 gametes has a complete set of chromosomes
A I think I hope this helped