Actually, global warming is a normal process and also caused by nature.water vapor actually is the main cause of global warming and it keeps the earth livable....but what's happening now is abnormal.. because there is this rapid increase of the earth's temperature because there are lots of greenhouse gases trapped in the atmosphere due to human activities.These greenhouse gases are: CO2,nitrous oxide,sulfur oxide,CFCs, etc.. so, the question is What can we do to prevent global warming? > first thing to do is to discipline ourselves. >respect the environment. >be knowledgeable >lessen the usage of different things which emits greenhouse gasses. example aircons,refrigerator,aerosol sprays, cars... >PLANT TREES, and other plants, it lessens CO2... >stop burning. >participate in different organizations which supports the betterment of our environment. hmm.. lemme think of other answers..i missed my environmental science classes...