question: What sentence would provide a factual answer to this question: "What are made of nerve cells?"

answer: nerves are made of nerve cells

question: What sentence would provide a factual answer to this question: "It is much harder to go star gazing in the city as opposed to the mountains due to the amount of factories doing what to the air"

answer: as light pollution increases , seeing the stars will be harder

question: What sentence would provide a factual answer to this question: "Different plants draw different minerals so to save the land you need to"

answer:
crop rotation renews soil