A giant downside to this world is called pollution. Every year there`s more and more people that are throwing away garbage and recyclables in places such as freshwater rivers, beaches, oceans, cities, and fields. Another common cause of pollution is air pollution. Air pollution is caused when cars, or factories, or any other thing that releases dangerous gases into the air, such as carbon dioxide, damaging the ozone layer. Damaging the ozone layer will make the atmosphere thinner, which will then cause us to have no protection from the sun, eventually burning us and making it hard to survive. The icecaps will also melt too. Another very common type of pollution is water pollution. Water pollution is just as it seems, when litter, garbage, and dangerous fluids have intoxicated seas, lakes, and rivers. Water pollution is a very deadly cause in many dry, and poor countries where lots of countries going through a heat wave or drought, will have to boil their water, causing a lot of it to evaporate. And last but not least, there is littering, where most have done it once in their lives. Littering happens all over the world, where constantly people throw out things that could be recycled, or plain garbage on the streets, fields, and cities.