Third work publié le 04/03/2009
1 - The Chinese population increases so does the pollution because they have to use more energy so they need more coal, oil and gas...
(The Chinese population increases, they need to produce more and so need more coal, gas and oil consequently pollution levels increase too.)
2 - Chinese scientists are aware of the situation because of the growth of Chinese economy and the need for more and more energy.
Chinese students feel concerned.
The world population has increased from 2 billion to 6.5 billion over a period of 25 years so the need for energy has increased proportionaly.