(i) Coliform: A group of bacteria found in human intestines, whose presence in water indicates contamination by disease-causing microorganisms.
(ii) Recycling : The act of processing used or abandoned materials for creating new products.
(iii) Sustainable development : A pattern of resources used for obtaining economic and social growth of the present generation while preserving the resources for the needs of future generations.
(iv) Chipko Andolan : A grass root level movement in which the villagers hugged the forest trees and prevented their mass felling by the contractors.
(v) Watershed management : A scientific method of developing land and water resources to increase the biomass production without causing ecological imbalance.
