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?

What is the difference between external & internal migration

Which area on the map would be most likely to have the most oil exploration in since the start of the 21st century? a) b) c) d) plz me

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.