Why must earth recycle its atoms from one rock type to another in order to form new minerals and rocks ?

What is a compass? how does it work

How does central place theory explain patterns in the size and distribution of cities?

When reading a textbook blank. a) it’s safe to assume that the ingot is not biased b) you should watch for fallacies in information and author bias c) you should fact check everything you read d) it is understood that academic sources are not biased