Question

They choked under industrial pollution, animal waste and sewage. Meaning

Answer 1

This line means that the living organism had been harshly effected because of toxic waste given from the industries in the form of toxic materials, carbon dioxide and carbon monoxide.The sewage also can be harmful as the most of material is not a biodigradable waste. They could choked and could even die.

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Answer 2

Answer:

Water pollution has many sources. The most polluting of them are the city sewage and industrial waste discharged into the rivers. Industrial waste is defined as waste generated by manufacturing or industrial processes. Industrial waste may be toxic, ignitable, corrosive or reactive.