![5 Human Impacts on the Environment: Crash Course Ecology #10](https://i.ytimg.com/vi/5eTCZ9L834s/sddefault.jpg)
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crash course ecology environment human ecosystem extinction animal ecosystem services biosphere climate change deforestation desertification acid rain pollution support services provisioning services regulating services climate cultural services economics biodiversity health global warming invasive species rainforest amazon erosion nonnative species overharvesting vulnerable disturbance