Why don't fish have spines like the foraminifera to keep them from sinking?
a) The drag would use up too much energy in swimming.
b) The fish is too heavy, so the drag would not slow its sinking by much.
c) The drag would hinder the fish from catching prey.
d) Fish don't need the extra surface area of spines to keep them buoyant due to their internal and external structure.
e) A, B, and C
E
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