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: Microevolution is the process by which organisms change in small ways over time.

Answer: What is the process by which organisms change in small ways over time?

Question: When gas particles heat up, pressure increase.

Answer: Does pressure increase or decrease when gas particles heat up?

Question: The presence of a nucleus is the main difference between prokaryotic or eukaryotic cells .

Answer:
What is the main difference between prokaryotic or eukaryotic cells ?