How do tsunamis affect the biosphere, lithosphere, atmosphere and hydrosphere?

Which of the following terms describes the layers of air surrounding the earth ?

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

The fact that similar fossils are found on both sides of the ocean is evidence of: a. global positioning. b. magnetic reversal. c. continental drift. d. oceanic drifts. select the best answer from the choices provided a b c d