What is the speed in a High Energy created depositional environment?

Where is the vascular system located

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.

Suggest 3 different reasons why there is an ageing population in the uk .