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: Plankton is the most common life form in the ocean.

Answer: What is the most common life form in the ocean?


Question: The term elastic potential energy is used to describe potential energy due to an object’s shape.

Answer: What term is used to describe potential energy due to an object’s shape?


Question: Scientists explain the world based on observations.

Answer:
Scientists explain the world based on what?