question: What sentence would provide a factual answer to this question: "What happens when molten lava comes into contact with a car?"

answer: melting point means temperature at which a solid melts

question: What sentence would provide a factual answer to this question: "The creation of gypsum from anhydrite is an example of what?"

answer: if an object undergoes chemical change then that object will have new chemical properties

question: What sentence would provide a factual answer to this question: "the best way to improve production in future yields on the farm is"

answer:
crop rotation has a positive impact on soil quality