UPSC previous year question paper of subject Issues on Environment, Ecology, Biodiversity & Climate Change from the year 1995 to 2000 with answers.
#1. Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called 
#2. Consider the following programmes:  1. Afforestation and development of wastelands 2. Reforestation and replantation in existing forests 3. Encouraging the wood substitutes and supplying other types of fuel 4. Promotion of wide use of insecticides and pesticides to restrict the loss of forest area from degradation caused by pests and insects. The National Forest Policy of 1988 includes: