Environment is defined as the total planetary inheritance and the totality of all resources. It includes all the biotic and abiotic elements that influence each other. All living elements-the birds, animals and plants, forests, fisheries etc. are biotic elements. Abiotic elements of the environment includes non-living elements like air, water, land, rocks and sunlight etc. Functions of the Environment (i) Environment supplies resource (both renewable and nonrenewable resources) for production. (ii) Environment assimilates waste, (iii) Environment sustains life. (iv) Environment enhances quality of life. The environment is able to perform these functions without any interruption as long as demand on these functions are within its carrying capacity. Carrying capacity implies two things: (i) Resource extraction should remain below the rate of resource regeneration. (ii) Generation of wastes should remain within t...