Question

Complete the following table taking into account the relation between the entries in three columns:

	Air pollution	Water pollution	Soil pollution
Components	Gases: CO2, CO, Hydrocarbons, Sulphur, NOx, Hydrogen sulphides etc. Solid: dust, ash, carbon, lead, asbestos, etc.
Source		Industrial wastes, domestic wastes, sewage, chemicals discharged from industries, pesticides used in agriculture.
Effect			Soil erosion, retarded growth of plants/ crops, Nutritional deficiency etc.

Answer 1

	Air pollution	Water pollution	Soil pollution
Components	Gases: CO2, CO, Hydrocarbons, Sulphur, NOx, Hydrogen sulphides etc. Solid: dust, ash, carbon, lead, asbestos, etc.	Biotic components: Alage, Virus, Bacteria, Parasite. Abiotic factors: Sand, soil, dust, floating particles, precipitates of salts, silver, lead, heavy metals, (Radioactive substances) Organic components: Weedicides, pesticides, sewage, etc.	Soil pollutants are different in different regions. E.g. Near field-inorganic components of insecticides and excess fertilizers, heavy metals, and other toxic chemicals.
Source	Chemical industries and oil refineries. Thermal power station, paper industries, cloth mills, cement, manufacturing, Dynamites, stone crushers.	Industrial wastes, domestic wastes, sewage, chemicals discharged from industries, pesticides used in agriculture.	Industrial effluents, household toxic materials, chemical pesticides, biomedical wastes, E-wastes, plastic waste.
Effect	Impact on human health. Serious effects on respiratory system, effect of plants and animals, acid rains, climate change.	Epidemics of water-borne diseases in humans. Mortality of aquatic animals. Eutrophication of the water bodies.	Soil erosion, retarded growth of plants/ crops, Nutritional deficiency etc.