Which of the following is not one of the five main types of biomes (a) forest (b) desert (c) grassland (d) tropical

In north america, most winter storms form when cold, dry air from interacts with warm, moist air from

All of the following statements about the biosphere are true except: a. light and heat from the sun do not affect the biosphere. b. the biosphere gets resources from earth's crust, hydrosphere and atmosphere. c. like "biology", the name for the biosphere comes from the greek word for life. d. the biosphere includes all living organisms on earth's surface.

What first caused people to consider that the continents were once one large landmass?