Which of the earth's changes can be explained by plate tectonics? earthquakes erosion mountain ranges ocean trenches volcanoes wind weathering

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

Hurricanes a. usually form over land b. usually intensify over land c. gain strength from ocean heat d. usually form over the poles