question: What sentence would provide a factual answer to this question: "Using what the surface of the Earth is made of, you could build"

answer: Earth 's surface is made of rock

question: What sentence would provide a factual answer to this question: "Which would be considered exhaustible?"

answer: solar energy is an inexhaustible resource

question: What sentence would provide a factual answer to this question: "Conserving water can be used for survival where?"

answer:
conserving water can be used for survival in a dry environment