We live in a clean world; eat and drink what we want, swim in lakes, seas and breathe fresh air. Didn't you feel disturbed when reading the expression "fresh air" or "eat whatever you want"? Otherwise, I have to say that you probably haven't lived in a world that isn't full of cars, factories that aren't built everywhere and that doesn't hesitate to eat vegetables because it doesn't think not how they are grown. People continue to do things that are harmful not only to themselves but also to nature and therefore to the world. Global warming is becoming the most serious problem of our time, as its effects have begun to be felt in recent years. There are many reasons behind global warming, but in my essay I will mention two of these main reasons and their effects. The first, and probably most effective, cause of global warming is carbon dioxide emissions from fossil fuel-burning power plants and the burning of gasoline for transportation. The burning of coal, oil and some other fossil fuels at extremely high temperatures is the primary means by which electricity is produced.. ...