question: What sentence would provide a factual answer to this question: "Amphibians such as frogs start their lives in eggs in"

answer: amphibians hatch from eggs

question: What sentence would provide a factual answer to this question: "A river can push tin cans down the path of the water because"

answer: flowing liquid can push objects

question: What sentence would provide a factual answer to this question: "Earth's magnetic patterns are helpful"

answer:
Earth 's magnetic patterns are used for finding locations by animals that migrate