Which of the following did not play a role in weakening the power of the church?
a.) the bubonic plague
b.) feudalism
c.) the reformation
d.) strong leaders

Explain how a convection current in the earth is formed.

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 is an additional type of erosion found at the coast? what does it mean?