(i) All the plants and animals in an area are interdependent on each other. The plants and animals; along with their physical environment make the ecosystem.
(ii) Relief (Land and soil) and Climate (Temperature, humidity, photoperiod and precipitation) are the factors which are responsible for the distribution of plants and animals in India.
(iii) A biosphere reserve is an area proposed by its residents, ratified by a national committee, and designated by UNESCO’s Man and Biosphere (MAB) program, which demonstrates innovative approaches to living and working in harmony with nature.
(iv) Tropical (Elephant, deer) and Montane (yak, snow leopard)