Answer:
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The Answer is D. Tidal power because the waves created from the bottom of the ocean floor, the wave's never stop coming .
Answer:
C
Explanation:
I'm an astronomy nerd so i understand this stuff
A commensalistic relationship is one sides but neutral for the other party. Barnacles live on whales but whales are not directly affected by them. I do not believe the barnacle population decrease would affect whales at all.