The danube river is navigable and thus connects many of the countries of the european continent

Which theory suggested that the earth was once a signle supercontient that gradually that broke up into the contients that we know today

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.

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?