●Hazard of air pollution
(1)To human health (2)To animals and plants (3)To weather and climate
●The control measures
Industry
The stove heating boilers and transportation
South
There is much pollution. Some factories pour a lot of pollutants into the natural river.
The main pollutants are solids, organic matter, oil, volatile phenol, cyanide, sulfide, mercury, cadmium, chromium, lead, arsenic and so on.
How to protect the plants
●The government should coordinate the protection and development. ●We ordinary people should take actions to protect the plants.
Humans destroy the nature casually
Rare trees are damaged
The yew trees The Putuo Carpinus Tree
Priestley’s discovery
The experiment Photosynthesis
Hurting the plants harms ourselves