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China has suffered from pollution problems.
The environmental watchdog association says:
1. One-tenth of China's arable land is damaged by pollution.
2. Each year, 12 million tons of grain are contaminated by heavy metals in the soil at a loss of about $2.5billion.
3. Irrigated sewage, scrap metal and acid rain contaminate crops.![air pollution china.jpg](http://www.panasianbiz.com/uploads/air%20pollution%20china-thumb.jpg)
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