The environment refers to natural things around us which sustain our life, such as the atmosphere of the earth, fresh and healthy air and drinkable water etc. the define environment we may say that it is an outer physical and biological system in which man and other organisms exist with many interesting components. The most recognized among these components include theist rocks, minerals, soils and waters, the land and it present and potential vegetation, the animal life and potential for livestock husbandry and the climate etc. there is a close interaction among these various components which is termed as ecological balance.
This interaction of various components is known as ecosystem. This ecosystem is related with environmental factor. The various living organisms of this environment get heat and energy from the sun to make a closely knit eco -cycle.
Organisms of ecosystems may generally be divided into three categories.
1) producers
2) consumers
3) decomposers
Producers mostly belong, to the category of plants that make their food by the inorganic substances by themselves in the presences of light. Consumers particularly include animals including human being, that depend their food on other organism including plants, and the decomposers come in the category of bacteria and fungus etc. that decompose the organic substances present in dead plants and animals.
The system is useful to man. A perfect ecological balance cannot be expected in the wake of growing industrialization as owing to this, pollution of environment becomes inevitable.
The environmental has `carrying capacity’, or the amount of pollution or damage an environment can sustain without further degradation.