The joint between the crust and mantle is ?​

The hebrews originally migrated from a. india b. egypt c. arabia d. mesopotamia

The formation of the planet uranus is estimated to have occurred approximately when?

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.