Natural resources, renewable and non-renewable resources. Pollution, Biodiversity, Ecosystem, flora and fauna, Water and it's importance, Utilization of water, Level of Biodiversity, Air Pollution, Water Pollution , Aquatic Pollution, Noise pollution...See more
, controlling of various pollution. thermal pollution. Disaster Management, Natural Hazard, Earthquake, Tsunami, Dams and Displacement of Dams
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