and building materials.
Since a large number of consumer consumption of wood and forest products, thus reducing the global forest area is not only a country's internal problems, it has become an international issue.
For example——Acid Rain
Heavy use of energy to enhance the human material, but also caused unexpected disaster, the second cause of acid rain damage, almost all over the world great harm.
Although coal than oil, but not inexhaustible. Instead of oil and other energy resources, in addition to coal, the large-scale use, little can. Although the inexhaustible solar energy, but too costly and time in a generation able to rapidly develop and widely used. Other new energy sources is also true.
Environment Protection
1、Intruduce
To develop the economy, but also protect the environment, which can balance the two? It can be said that there exist the contradictions is not only a short-term problem also a long-term problem.On one hand ,human must develop the economic,but the economic development is limited by the environmental protection on the other hand when people pay more and more attention to it. We must look at the issue dialectically.