What can be accurately said about Earth's continents?
A. They fit together like an enormous jig-saw
puzzle.
B. They have nothing in common.
C. they have always been shaped how they are
now.
D. They have never been connected.

Compare demographic and environmental effects of the columbian

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

Which part of a mountain receives the majority of moisture due to the rain shadow effect? a. the leeward side b. the windward side c. the bottom of the mountain d. all parts of the mountain receive equal amounts of moisture.