What modern process is thought to be similar to the way crust formed before plate tectonics began? the principles of convection currents. the formation of the hawaiian islands. the formation of the isua greenstone. the principles of accretion.

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?