What first caused people to consider that the continents were once one large landmass? A: glacier evidence in warmer countries
B: continents looked like they fit together
C: studying the valleys of the ocean floor
D: similar fossils were found on many continents

In a system, when potential energy decreases, then entropy also decreases. true false

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?