1) Pollution a) b) c) d) 2) Global warming a) b) c) d) 3) Overpopulation a) b) c) d) 4) Deforestation a) b) c) d) 5) Climate change a) b) c) d) 6) Endangered species a) b) c) d) 7) Acoustic pollution a) b) c) d) 8) Wildfire a) b) c) d)

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