Skeptics of manmade climate change offer various natural causes to explain why the Earth gets warmed every year. But can these account for the planet's rising temperatures?
Although natural forces including Volcanic, Ozone, Solar and Obital Change rank from the second to the fifth, respectively, however, the actual amount of emission natural factors have had little effect on the Earth's overall climate.
The true reason is Greenhouse Gas Emission . It ranks as the top one force that contributes to climate change since 1990 and the atmospheric CO2 levels do increase dramatically.

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