The process to convert seawater into freshwater is known as
a. desertification.
b. desalination.
c. salination.
d. deforestation.

The earth's inner core reaches temperatures that are at times greater than 9000°f. what causes this layer to remain solid despite the high temperature?

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.

Quais são as consequencias (positivas e negativas) da extração dos minerais metálicos