The Universe consists of Pancha Bhoothas, the five basic elements - Earth or land, water, light or lustre, air, and ether. The nature has maintained a status of balance between and among these constituents or elements and living creatures. A disturbance in the percentage of any constituent of the environment beyond certain limits disturbs the natural balance and any change in the natural balance causes lots of problems to the living creatures in the universe. Different constituents of the environment exist with set relationships with one another. The relation of human being with environment is very natural as he cannot live without it. From the very beginning of creation he wants to know about it for self protection and benefit – Extracted from the Upanishads.