what is water pollution write its effect and its sources and how it can be prevented
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contamination of water by harmful substance is called as water pollution
effects : - ● water borne diseases like cholera ,typhoid, dysentery
● scarcity of water
●decrease in aquatic plants and animals
●soil fertility is lost
prevention : -
● treatment of sewage
●treatment of industrial wastes
● limited use of pesticides and fertilizers
●burning of hospital waste
● proper disposal of dead bodies
sources : -pesticides and fertilizers
synthetic chemicals
oils and grease
mineral acids
metals and compounds
phosphates
oxygen demanding wastes
diseases causing microbes
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