Answer:
I think the answer is B.
Explanation:
I think this because they have these variations to better adapt to conditions in their environments.
Answer:
b
Explanation:
i think its b, so far idk yet
It letter D. light-electromechanical sound-
There is too much water pressure. If you go down too deep, your lungs and internal organs would all burst.. who would want that?
So basically, a human would need more protection than what scuba gear would offer. (ex: a submarine would be so much more suitable)
