Earth's dangers

Earth's energy is limited. Rivers are usually dirty, smelly and full of garbage, so we won't have enough drinks in the future. Trees are made timbers to be houses and furnitures. When the trees are disappeared and Co2 will make high temperuture. And then the ice in the north and south will melt away as soon as possible. Ocean will be higher and higher, so many low-lying places drown and some animals can't live in this kind of environment. Follow this problem, Earth's environment will have big change if we keep using the energy and don't protect them. When the environment change, super earthquake or hurricane could happen. Without these presumes, earth could be hit by huge rocks, but the scientists aren't find any proof yet. Although we can't stop it, I think we should do our best to slow it down.