The thickness of the earth's crust varies. The crust beneath mountains is thicker and extends up to Group of answer choices:

3 miles or 5 kilometers.
43 miles or 70 kilometers.
43 kilometers or 70 miles.
19 miles or 30 kilometers.

Which of the following is true of all geographic locations on earth?

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

Which of the following regions suffers the most from acid rain? a. the area around vancouver c. the area below atlanta b. the area below detroit d. the area above montreal