A block of wood has a mass of 8.0 g and a volume of
20.0 cm3. What is the density of the block of wood?

How do convection currents form underwater mountains?

You could say the relative location of washington, d.c.

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.