During the recent ice age, glaciers covered almost percent of earth's land.

What conclusión can be drawn about the middle east

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.

Explain the value of statistics and other data to positive economics and to normative economics