I would say D because mechanical weathering is the breaking up of rocks by physical forces
Question : What is one theory that has been proposed about the formation of the universe
Logical Answer : The Big Bang Theory.
Answer:
a waste is waste when it's unwanted for example there's a piece of cardboard and you threw it away cause you thought it had no use but you could have mad some useful things out of it. thanks
hope my answer is helpful .I guess so