Over Exploitation : Every species depends on the nature for their daily needs of food and shelter. This concept is equally applied on to the human beings. Over the period of human development human has used nature for all his needs but humans have started overexploiting the nature to fulfill his needs which leads to the degradation and extinction of natural resources. Many species extinct in the last 500 years for example : Steller’s sea cow and Passenger pigeon were due to over exploitation by humans. At present marine fish populations around the world are over harvested, endangering the continued existence of some commercially important species.
