How many disneylands can cover 4942 acres

What is associated with mid-ocean ridges?

Which age groups shows the graestest diferrence between males and females

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.