Answer:
A is correct external fertilisation doesn't require sexual intercourse
<span> Unlike primary succession secondary succession occurs in a place where an ecosystem currently exists.</span><span>
</span>
Nucleus, mRNA, Rough ER, Ribosome, Golgi Body, Cell Membrane.
This question is kind of tricky since a protein would be within the nucleus AS an mRNA sequence and within the rough ER WITHIN a ribosome.