Niagara falls straddles the border between which two countries?

The physical processes that create most of earth's physical features, including mountains, are known as

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 the 1400s, portugal’s economy was based on a. industry b. exports c. finance d. trade