You are given a sentence and your task is to generate another sentence that supports the given input.
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Question: A reverse osmosis membrane separates the various low-molecular-weight molecules and ions from the solvent by forcing the solvent or major component to pass selectively through the membrane by applying pressure greater than the normal osmotic pressure.

Answer: Applying a pressure greater than the osmotic pressure of a solution will cause reverse osmosis.

Question: Food and habitat availability, reproduction, environmental cycles, and temperature change may be causes of migration for some species.

Answer: A change of season and less food usually cause certain animals to migrate.

Question: Each water molecule contains 3 atoms, 2 of hydrogen and 1 of oxygen.

Answer:
Water contains 3 atoms.