文档介绍：Warm-up exercises
Do you think man lives in harmony with nature now?
The present relationship between man and nature is not as harmonious as before. With the population explosion and the development of the economy, serious damage has been done to nature.
Do you think that man has been destroying nature?
Yes, Man has cut down half of the trees that existed 10,000 years ago. The loss of trees has upset the ecosystem and resulted in the extinction of many species. Consequently, nature has lost its balance. Another example is that man has been burning too much fossil fuel for daily use and industrial production, which has caused heavy pollution to our environment.
All this has resulted in such problems as global warming, soil erosion, shortage of fresh water, droughts and sandstorms….. Human beings no longer live in harmony with nature.
Can you name some of the nature disasters?
Before
What environmental issues do you think are the most pressing now?
2. Can you recognize what environmental issues do the following pictures show? What do you know about them?
Share your knowledge with your classmates.
About the Author
Alexander Spirkin
Read and Think
Environmental Issues
Group Discussion
Dialectical Materialism
Before
Deforestation
( )
Air Pollution
( )
Global Warming
( )
Ozone Depletion
( )
About the Author
Alexander Spirkin
Read and Think
Environmental Issues
Group Discussion
Dialectical Materialism
Before Reading_2
Directions: Read the following poster. Can you understand what
the poster means? What information can you learn
from it? How do you feel after reading the poster?
About the Author
Alexander Spirkin
Read and Think
Environmental Issues
Group Discussion
Dialectical Materialism
The world’s water supply
If all earth’s water fit in a gallon jug, available fresh water would equal just over a tablespoon — less than half of one percent of the total. About 97 percent of the ’s water is seawater; ano