Generate a sentence that answers this question: "A piece of pizza is placed within a box and becomes this when something is conducted throughout the box into the food:".

Answer: thermal conduction is when materials conduct heat through those materials

Generate a sentence that answers this question: "High areas can be visually represented by".

Answer: a valley is formed by a river flowing

Generate a sentence that answers this question: "A plastic toy reduced to a puddle was left on a".

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