Environment is very essential in every aspect of life.All the living beings are depend upon the environment.All the components required for survival of living organisms are gained through environment. Air,water,soil,food etc.required for survival are acquired through the environment.All the development of living creatures are done in fnvironment.Human beings utilizes the natural resources for development of civilization of human beings.For standardise the quality of human life, man use the environment in different sectors of development activities.plant and animals are also depend upon the environment.Therefore,all the pross such as servival,reprodution,growth and development etc.of living organisms are done under the environment.