Global warming what is it? Global warming refers to an average increase in theEarth's temperature, which in turn causes changes in climate. So what's the big deal you
ask? Well the big deal is, if temperatures rise above normal levels for a few days, it's no big deal, the Earth will stay more or less the same, but if temperatures continue to rise over a longer period of time, then the Earth may experience some serious problems!
What causes global warming? The Earth's atmosphere contains gases that naturally help to hold in heat, these natural Greenhouse gases keep our atmosphere warm
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