What are some global environmental problems that are caused by fast food?

As the title asks, What are some global environmental problems that are caused by fast food? I'm trying to do some research for a paper for global problems caused by fast food and I'm leaning towards the environmental side. It would be great if people could give some suggestions. Thanks!|||Fast food usually has meat in it, and livestock is the number 1 contributor to carbon emissions.





A movie called 'Meat the Truth talks about the links between meat eating and global warming.


Here are some quotes from the movie:





"In the US, the meat industry uses about one third of all the fossil fuels that we generate.”





“The production of 1kg of beef is just as bad for the environment as driving around in the car for three hours while you left all your lights on at home.”





Good luck with your research!|||when i eat fast food it gives me gas and i heard that methane is bad for the ozone layer. but maybe a small hole would not be to bad so we could have some ventilation.