question: What sentence would provide a factual answer to this question: "O2 molecules stacked on top of each other create weight which is then tallied by a"

answer: a barometer is used to measure air pressure

question: What sentence would provide a factual answer to this question: "A piece of paper is a different shape when it"

answer: folding an object causes that object to change shape

question: What sentence would provide a factual answer to this question: "when the needle of a compass lines up with Earth 's magnetic poles , the needle is"

answer:
when the needle of a compass lines up with Earth 's magnetic poles , the needle points north