Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: The outer layer of the sun is made up of plasma.

A: What is the outer layer of the sun made up of?
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Q: Saturated hydrocarbons hydrocarbons contain only single bonds between carbon atoms.

A: What hydrocarbons contain only single bonds between carbon atoms?
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Q: Adaptive immunity term is used to describe an immunity that occurs after exposure to an antigen either from a pathogen or a vaccination.

A:
What term is used to describe an immunity that occurs after exposure to an antigen either from a pathogen or a vaccination?
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