How does the Moons appearance change as the Moon revolves around Earth?

How did the europeans design the national borders of africa? why?

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.

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa