Global warming is caused by carbon dioxide formed by people which then traps heat in the atmosphere that is like a blanket of heat wrapped around the earth.
Because of this, ice on the polar icecaps are starting to melt causing our ocean water to rise. now if this continues than we are in trouble because a lotttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt of countries will be underwater and this our fault.
scary i know hopes this help u understand a little about global warming. ;)
