Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Prokaryotes group of simple organisms recycles nutrients and has been on earth since long before multicellular life appeared.

Answer: What group of simple organisms recycles nutrients and has been on earth since long before multicellular life appeared?


Question: At a convergent plate boundary, when one plate is oceanic, there are large volcanoes.

Answer: At a convergent plate boundary, when one plate is oceanic, there are large what?


Question: Single bonds are there between carbon atoms in saturated fatty acids.

Answer:
What kind of bonds are there between carbon atoms in saturated fatty acids?