One social change during the Paleolithic Revolution was the formation of social classes true or false?

What school are you from and what state are you from?

Most of earths fresh surface water is found in

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