Which of the following is the example of human interference with nature, has upset the biological equilibrium?
Poaching animals
Poaching or hunting endangered animals is a serious interference of human which is disturbing the biological equilibrium. International trade in wildlife products has threatened the existence of tigers, bears, foxes, elephant, crocodiles, etc. For example, elephants are poached for ivory(obtained from their tusks), crocodiles for leather and tigers and lions for their fur.