Question

Name two (a) organic impurities, (b) inorganic impurities,(c) nutrients,(d) microbes present in sewage

Answer 1

organic impurities are vegetable matters inorganic impurities are plastic microbes are aerobic bacteria nutrients are vegetable matters

Answer 2

Organic substances are any substances which consist of  carbon. Organic impurities may include the substances which pollute abiotic components like water, soil etc. Organic impurities which pollute water are collectively called as sewage. Sewage comprise human faces, animal waste, urine, oil, vegetable peels, fruit wastes, some pesticides and some insecticides.