question: What sentence would provide a factual answer to this question: "Polar bears grew thick fur because"

answer: adaptations are used for survival

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: "Canyons are generally old, huge, and breathtaking and are"

answer:
a canyon is made of rocks