Man made causes- Global warming is mainly caused by man. The main problem caused by man is pollution, eg. burning fossil fuels which release methane gas into the earths atmosphere which then traps heat in the atmoshere.
Population is another problem assoiated with global warming because a rise in population in any country means that more food and more ways of transport. More transport means more methane gases are produced into the envirement because more fossil fuels are burnt.
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