2015-2016学年北师大版 选修八 unit 22 Environmental ProtecionLesson 1 Global Warming B课件 (17)
2015-2016学年北师大版 选修八 unit 22 Environmental ProtecionLesson 1 Global Warming B课件 (17)第3页

4 is an increase over the time of the average temperature of the Earth. 5 is harmful to the ecology of the sea. 6 Thousands of people in Africa continue to die because of war and . 7 the water level rose so high in several places that many homes are at risk from .

Global warming

Overfishing

poverty

flooding