Plz help Well mark brainliest if you are correct!!

Rachel Carson (B)

Explanation:

She was an marine biologist.

An ecologist is someone who studies an environment such as the ocean and also studies the things in the environment.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

golgi body just took the test on edge