Genetic engineering refers to the changing of the genetic makeup of a plant or animal.

true
false

What events caused the united states to intervene in southwest asia?

The coco river is a natural border between nicaragua and which other country

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.