We live in harmony with each other, in the environment around us. All creatures of the existence form a part of the bio diversity, and play a vital role to maintain a balance. But human activity in the past few decades, especially in the past few years is major role for the loss of biodiversity. Our brutal activities wipe out species from the face of this earth. This has major repercussions. Extinction of a species marks imbalance in the nature. By just merely cutting down tress in a big way, fishing in areas of coral reef, etc., for our benefit leads to loss of bio diversity.