All the living organisms are so closely interlinked (through food chain, food webs, material cycling, energy flow etc.) that destruction of one kind of wildlife on the earth may upset the ecological balance in nature e.g. killing of carnivores will increase the population of herbivores which will damage the vegetation and disturb the ecological balance. Species of plants and animals keep a check on their numbers through food chains, so the wildlife helps to preserve the environment as a self sustaining system. Thus, ecosystems offer support and provide services like soil fertility, plant pollinators, predators, decomposers, purification of air and water, management of floods and drought and other environmental disasters.
Bio-diversity is required for maintaining and sustainable use of goods and services from eco-systems.
