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: Cell -> tissue -> organ -> organ system sequence represents the correct levels of organization for multicellular organisms.

Answer: Which sequence represents the correct levels of organization for multicellular organisms?

Question: Hydras and sea anemones are examples of apolyp.

Answer: Hydras and sea anemones are examples of what form?

Question: Satellites are man-made devices in space that are used to observe the earth's surface.

Answer:
What man-made devices in space are used to observe the earth's surface?