Fill in the blanks:

In the developing countries 95% of the sewage is let into ____________.

In the developing countries, 95% of the sewage is let into rivers.

Explanation:

Resources can be classified as renewable and non-renewable. Renewable resources are those resources that will get renewed and replenished through physical, chemical and mechanical processes. Even though water is a renewable resource and can be replenished able, nearly 60% of all the fresh water sources are under threat by pollution. Nearly 95% of the sewage is let into rivers in developing countries from the discharge from factories and other chemical pollutants. All the river systems in the developing countries are under the threat of pollution from sewer waste.