Calculate the difference between the cost of a used brain and an unused brain

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.

How many time zone are there on earth

What type of coastline is commonly found along the western side of the america’s