Given a scientific passage and an answer, generate a question for the given answer.

Ex Input:
Passage: Biodiversity generally increases the productivity and stability of ecosystems. It helps ensure that at least some species will survive environmental change. It also provides many other ecosystem services. For example:. Answer: biodiversity

Ex Output:
What helps ensure that, at least, some species will survive environmental change?

Ex Input:
Passage: When a fluorine atom gains an electron, it becomes a negative fluoride ion. Answer: fluoride ion

Ex Output:
When a fluorine atom gains an electron, it becomes a negative what?

Ex Input:
Passage: Peroxisomes Peroxisomes are small, round organelles enclosed by single membranes. They carry out oxidation reactions that break down fatty acids and amino acids. They also detoxify many poisons that may enter the body. Alcohol is detoxified by peroxisomes in liver cells. A byproduct of these oxidation reactions is hydrogen peroxide, H2O2, which is contained within the peroxisomes to prevent the chemical from causing damage to cellular components outside of the organelle. Hydrogen peroxide is safely broken down by peroxisomal enzymes into water and oxygen. Answer: fatty acids and amino acids

Ex Output:
Peroxisomes carry out oxidation reactions that break down what acids?