question: What sentence would provide a factual answer to this question: "Thick feathers can be used to stay what?"

answer: thick feathers can be used for keeping warm

question: What sentence would provide a factual answer to this question: "A person wants to use raw materials to make things. Considering the want to create with raw materials, the person"

answer: if something is a raw material then that something comes directly from a source

question: What sentence would provide a factual answer to this question: "I can see melting occur when"

answer:
melting is when solids are heated above their melting point