What are the main types of stem cell and where do they come from

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 of the following insects is a decomposer? a. mosquito. b. caterpillar. c. beetle. d. none of the above.

What border separates sonora and chihuahua national border state border physical boundary natural boundary