Why was egypt called a river civilization?
because egypt began when river gods were really popular.
because the river is in the middle of the country.
because of the powerful influence a large river system had on the lives of the
people.
because egypt has over 100 important rivers.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.