Dolphin fins and shark fins: a.
are an example of convergence.

b.
are an example of divergence.

c.
suggest these two populations could interbreed.

d.
are evidence that adaptive evolution is mainly driven by random forces.

e.
None of the above is correct.

a

Explanation:

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answer: b. nucleolus

explanation: nucleolus is a structure in the nucleus are ribosomes are made.

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: d

-charlie

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: d

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.