Global warming has been causing a set of changes to the Earth's climate or long term weather patterns that varies from place to place.Glacier's are melting in other countries,sea levels are racing,cloud forests are dying and wildlife is scrambling to keep pace. It has become clear that humans have contribute to the past countries warming by releasing heat-trapping gases as we power our modern lives.Levels of greenhouse gases are higher now than at any time in the last 800,000 years

what is caused?
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EFFECT ONE EFFECT TWO

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EFFECT THREE EFFECT FOUR ​