Traditional Culture Encyclopedia - Photography major - Slogans calling on people to protect the environment

Slogans calling on people to protect the environment

According to surveys, in the 41,000 cubic kilometers of fresh water injected from rivers into the ocean every year, there are 20 billion tons of suspended solids and dissolved salts, including metals and pollutants, urban garbage and sewage. This shows the seriousness of human activities in marine pollution.