Man, most advanced form of life, before being civilised one is also a animal first, This thing implies that he is also dependent on nature for its needs. So, biodiversity has great role in the life of human beings. First of all, we can say that this whole Universeis interdependent. This can be understood by the example of food chain, nutrient chain and flow of energy within various ecosystem. Another important thing is that every economic need is being satifisfied through nature. Humen get food, medicine, Livestock, both etc. from nature. Other very important thing is that through the study of biodiversity we can know the process of evolution, how various species developed.

KEYWORDS: Biodiversity, Ecosystem, Food Chain, Nutrient Chain, Livestock.