How did the opening of the panama canal change the united states

How is france’s culture important to its economy

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 structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?