What is the source of the magma that erupts from a volcano

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.

In a class of 20 students, what democratic form of governance makes the most sense

Identify the type of weathering seen in each picture ? chemical weathering mechanical weathering