What enabled easy trade between new england and the caribbean?
a. advances in shipbuilding
b. favorable ocean currents
c. new mapping techniques
d. monoculture of sugarcane

On the map below, which of the following rivers is identified by blue? the huang he river the yangtze river the han river the naktong river

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.

Can someone me with this plz? ! i'm putting 20 points on it!