Sorry but I don't have time to edit your English. However, here's a quick overall comment on your essay. After reading the question, I expected your essay to consider other important global priorities, such as ending war or eliminating poverty.
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Ngan HoAs the emissions from combustion of fossil fuel use have a seriously impactAs the emissions from combustion of fossil fuel use have a serious impact
Ngan Hofor all governments all over the world becausefor all governments, all over
AlpheccaStarsAs the emissions from combustion of fossil fuels use have a seriously deleterious (you need an adjective here for the adverb "seriously") impact on the environment, finding green energy sources seems to have become more necessary than ever. Personally, I disagree with the idea that a renewable energy supply is the key consideration for all