Generate a sentence that answers this question: "Echolocation is when animals detect objects by hearing echos using what?".

Answer: echolocation is when some animals detect objects by hearing echoes by emitting sound

Generate a sentence that answers this question: "A source of heat could be".

Answer: a radiator is a source of heat

Generate a sentence that answers this question: "What is least likely to exchange damage from heat with it's surroundings?".

Answer:
wood is an thermal energy insulator