nature itself: volcanic eruptions, gas emission because of the ocean "breathing", solar activity changes, etc. But on the other hand, human beings also have their negative impact: burning coal, pumping out oil and gas. As a result, the landscape has been changing a lot over the last hundred years. The problem has been getting worse because of cutting down trees for cleaning the space for new buildings: office skyscrapers, houses and shopping centres. Why is global warming so dangerous? The oceans and seas are getting warmer, so ice caps are melting As a result, the level of water is changing, and people are suffering from floods. Droughts prevent people from growing crops and can definitely lead to war Increasing CO₂ (carbon dioxide) concentration in the atmosphere causes the greenhouse effect , which has a lot of consequences too. Firstly, it can lead to holes in the ozone layer , which are a great of radiation, harmful and dangerous for human beings. Secondly, uncon cause change can destroy the fauna balance. Plenty of animals and p source come forever. Both flora and fauna are in danger, and only people are able to stop the catastrophe.