Help as soon is possible, will mark Brainliest to the correct one! A few years after a major oil spill, which area is most fragile in terms of its biodiversity?

Benthic areas
The polar waters
The middle water
Tropical areas

A few years after a major oil spill, the middle water is most fragile in terms of its biodiversity.

The answer is middle water. After a spill, the oil first affects the open waters where the oil first accumulates. After some years, the oil gets broken down into small particles by oil-eating bacteria and become dissolved in water. They accumulate in the middle oceans and affect biodiversity of this region.

Please mark as brainliest! :D

hope it mark me as brainlieast.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands