Question

Air pollution is caused by transport exhaust fumes and emission of gases like SO2, CO2,
NO2 from industies. Similarly, water pollution is caused by ________ .
i) sewage ii) crop cultivation iii) rain iv) soil erosion

Answer 1

Air pollution is caused by transport infused fumes and emission of harmful gases such as SO2, CO2,NO2 from the industries.

Similarly, water pollution is caused by Soil erosion.

Water pollution is the contamination of water bodies, by toxic elements, usually a result of human activities.

Water bodies such as lakes, rivers, oceans, aquifers and groundwater are polluted when contaminants are introduced into these natural environment.

Answer 2

soil erosion

hope it helps you