Pollution Water pollution Air pollution Greenhouse effect Nuclear pollution Soil pollution
Air pollution
Conclusion: If we can solve ecological problems, we will safe the Earth;If we can solve ecological problems, we will safe the Earth; People will be more healthy if air pollution stops;People will be more healthy if air pollution stops; If factories dont pour west into the rivers the water will be clean;If factories dont pour west into the rivers the water will be clean; We shall survive if we protect the nature all together.We shall survive if we protect the nature all together.