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People are the main cause of the extinction of animals. The other causes are the derivations of human beings.
All living beings need absolutely no human beings to survive, but they need these creatures to tear the smallest cell so that they can survive. If habitat (animal's habitat) is destroyed, unplanned population increase, build-up, burning of forests, loss of wetlands, many kinds of extinction risk. No one can predict the bad consequences of the disappearance of a strand in the earth or locally. This will not happen in the near future. For example, if the housebird, who is disturbing us, suddenly ascends, it will take animal carcasses to all sides. Or I suppose owls do not exist; then the pressure on the field mice is lifted.