The extraordinary flat land of the west siberian plain stretches from the ural mountains for how many square miles

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.

How does central place theory explain patterns in the size and distribution of cities?

How many years is a term in the senate