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: People stopped adding lead to gasoline because of environmental pollution.

Answer: Why did people stop adding lead to gasoline?

Question: Jellyfish type of animal in the sea spend most of their lives as medusae.

Answer:
What type of animal in the sea spend most of their lives as medusae?