In which layer of the atmosphere are the particles so far apart that they can travel hundreds of kilometers without colliding with each other? a. exosphere b. troposphere c. mesosphere d. thermosphere

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

Why is there little farming in mongolia

What weather conditions cause a hurricane