The main content of this article is a brief introduction to World Environment Day.

this passage is mainly about why China is so eager to implement garbage classification policy.

The loss to the whole ecosystem is inestimable if we discard our unused resources as garbage.Before garbage disposal, garbage can be turned into treasure through garbage classification and recycling. For example, recycling paper can protect forests and reduce the waste of forest resources. Recycling biological waste, such as peels and vegetables, can be used as green fertilizer to make the land more fertile.

A policy of waste classification has recently implement in Shanghai, China. What do people feel about it?