1. The chemicals we use to power cars and power plants affect the earths atmosphere.
2. The destruction of rainforests limits our amount of wildlife and wood.
3. Fossil fuels are running out because we use them so often.
4. All the endangered species is because of humans killing them for their skin, and or horns.
5. We have so much plastic and oil in the ocean it is polluting our only way of water, and killing many fish and underwater animals.