3. Landfills : When we throw garbage out of our house it goes to landfills. Landfills are those big chunks of garbage that you must have seen on some expressway, when you go out of your city, that stink. The garbage is is then used by big recycling companies to make some useful products out from that garbage.
Most of the time that garbage is burnt which then release some toxic gases into the atmosphere. These enormous amount of toxic greenhouse gases when go into the atmosphere makes global warming worse.