question: What sentence would provide a factual answer to this question: "If I wanted to maintain energy I could"

answer: a human requires rest to be healthy

question: What sentence would provide a factual answer to this question: "One way to see how a plant stem works could be"

answer: a plant stem contains a system of tubes for transporting water and nutrients to other parts of the plant

question: What sentence would provide a factual answer to this question: "When will the humidity increase in relation to bodies of water?"

answer:
as distance from water decreases , humidity will increase