Which of the following was the most important to the plains people?
a. trading
b. farming
c. ceremony
d. buffalo

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.

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

In a command economy, the majority of goods and services are provided by the