TASK DEFINITION: Given a scientific passage and an answer, generate a question for the given answer.
PROBLEM: Passage: The Gaia hypothesis states that the biosphere is its own living organism. Answer: the gaia hypothesis

SOLUTION: What hypothesis states that the biosphere is its own living organism

PROBLEM: Passage: The law of conservation of mass states that matter cannot be created or destroyed. Answer: destroyed

SOLUTION: The law of conservation mass states that matter cannot be created or what?

PROBLEM: Passage: There is a lot of water ice in the polar ice caps and under the surface of Mars. Answer: water

SOLUTION:
What is found in abundance in the polar ice caps and under the surface of mars?