Question

Case study – Mohan has two travels from one town to another town by steamer. The steamer, going down stream in a river, covers the distance between two towns in 15 hours. Coming back upstream it covers this distance in 20 hours. The speed of the water is 3Km/hr. calculate the following –
(i) The speed of steamer in still water
(ii) The distance between two towns.
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Answer 1

Answer:

Soil pollution is defined as the presence of toxic chemicals (pollutants or contaminants) in soil, in high enough concentrations to pose a risk to human health and/or the ecosystem.