Environmental effects: It's our doing by smith king
Approx. 240 words.
Published on October 8, 2013.
Nonfiction » Science and Nature » Earth sciences.
(5.00 from 1 review)
Human activity is the dominant cause of global warming observed since the 1950s, and scientists predict temperatures will rise another 0.3˚C to 4.8˚C this century.