Green Earth Series: River and lake on Earth(Chinese Edition) - Tapa blanda

Paperback. Pub Date :2014-01-01 Pages: 116 Language: Chinese Publisher: Chemical Industry Press. according to people closely related to the water door. human civilization and rivers. Rivers. lakes. is not only an important part of the geographical environment. but also rich in natural resources. Rivers and lakes of blood and scattered like land on Earth. like the Pearl. not only decorate the beautiful scene in the earth. and the supply part of people's daily consumption of water. while it also has important ecological value. However. in order to produce human life. and constantly develop the use of rivers and streams. lakes. rivers leading to depletion. eutrophication. stink to high heaven. Rivers. lakes. facing an increasingly serious environmental problems. Green Earth Series: Earth River and Lake is not only about rivers. lakes relevant knowledge. such as the causes of th...