Ecosystems are the basis of life itself!The natural ecosystems in the wilderness provide a variety of products and are regions in which a number of vital ecological processes are present ;without these processes,human civilization would not be able to exist.However,ecosystems are frequently distupted by human actions ,leading to the extinction of spices of plants and animal that can live only in the different natural ecosystem s.some speices ,ifeliminated seriously affect the ecosystem .These are called'Keystone species.Extinction occures due to changes in landuse.Forests are deforested for timber,wetlands are drained to create more agriculture land and semi-arid grass alnd that are used as pastures are converted to irrigated fields.The pollution several species.
The reason for the deplentation of natural is tow-fold-or rapidly exploding population needs increasing resources to sustain to sustain itself,and the growth of affluemt societies that consume
and waste a veru large proporation fo resources and energy.The increasing extraction of resources is at the cost of our natural ecosystems ,leading to a derailing of their important functions.we all use a variety of resources in our daily lives .If traced back to their source,we find that the resources were originally obtained from nature can no longer sustain .If we think before wasting resources such as water,reusing and recycling paper,using less plastic that are non-degradable,all this can cumlatively conserve our natural resources.
Thursday, September 10, 2009
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