LEARNATHON
III

Competition for grade 6 to 10 students! Learn, solve tests and earn prizes!

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Theory:

All living organisms require water to survive. However, almost every body of water is now contaminated with waste ranging from plastics to toxic substances. As a result, we must take immediate action to protect our valuable water bodies from further polluting. The following recommendations can help us in preventing water pollution:
  1. Use biodegradable detergents and avoid products that contain toxic chemicals.
  2. Wear clothing composed of natural fibres, such as cotton, rather than synthetic fibres, such as nylon or polyester.
  3. Throwing rubbish into water bodies, such as plastics, is not a good idea. To avoid pollution, always separate your waste into recyclable, non-recyclable and biodegradable categories.
  4. Domestic wastewater should be properly treated to remove all harmful substances before being utilised for flushing toilets and gardening.
  5. Instead of using chemical pesticides, use bio-pesticides (natural pest control).
  6. As a fertiliser, use compost made from cow dung, garden waste and kitchen waste.
  7. Water released by industries needs to be treated first before being discharged or recycled for industrial purposes.
Do you know?
 
Detergents with a straight hydrocarbon chain are known as Biodegradable detergents. Bacteria destroy these detergents. Biodegradable materials include sodium alkyl benzene sulphonate.
Detergents with a branching hydrocarbon chain are known as Non-biodegradable detergents. Bacteria cannot act on them. Cetyl methyl ammonium bromide is an example of non-biodegradable.