plant trees, save water, air pollution, , save water, deforestation, water pollution, , deforestation, air pollution, do not throw garbage into the sea, , use bike, waste disposal, loss of biodiversity, , pollution, waste disposal, endangered animals, , deforestation, Enviroment, water pollution, , Recycle, overpopulation, air pollution, , ozone layer depletion, loss of biodiversity, Garbage, , endangered animals, recycle, air pollution.

Environmental Problems

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恢復自動保存: ?