Page 2 - Home Assignment-Environment and sustainable development
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occurs when the environment of a species or a population changes and destabalises its
               survival.
               Consequence of Environmental Crisis
               The points given below describe the consequences of environmental crisis


                    Development has polluted and dried up rivers and other aquifers, which was
                     deteriorated the quality of water.
                    Intensive and extensive excavation of both renewable and non-renewable resources has
                     exhausted some of the vital resources, compelling to spend a huge amount of money on
                     technology and research to explore new resources.
                    Decline in air and water quality have resulted in increased number of respiratory and
                     water borne diseases i.e., expenditure of health care is also rising according to a data
                     70% of water of . India is polluted which cannot be used for drinking purpose.




               Two Basic Problems Related to Environment


                    Problem of pollution.
                    Problem of excessive exploitation of natural resources.

               Pollution It refers to those activities of production and consumption which challenge purity of
               air and water and serenity of the environment.
               Pollution unfolds itself in three ways


                    Air Pollution  impliespollution of an essential elements of life.
                    Water Pollution Water is an equally important element of life and its pollution is
                     equally serious. Polluted water is the principal cause of diseases like diarrhoea and
                     hepatitis.
                    Noise Pollution Excessive noise causes irritation and unnecessarily fatigues the body
                     and the mind.


               Causes of Environmental Degradation


                    Population explosion
                    Widespread poverty
                    Increasing urbanisation
                    Increasing use of insecticides, pesticides and chemical fertilisers
                    Rapid industrialisation
                    Multiplicity of transport vehicles
                    Disregard to the civic norms


               Global Environmental Issues
               The environmental issues which affect the whole world are called global environmental
               issues such as global warming and ozone depletion. These issues also contribute to increased
               financial commitments for the government.
               These issues are discussed below
               1. Global Warming
               The gradual increase in the average temperature of Earth’s lower atmosphere is called global
               warming.


               Causes/Effects
               It occurs due to greenhouse gases (carbon dioxide, methane and other gases which have the
               capacity to absorb heat) through burning of fossil fuels (coal and petroleum) and
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