| Global Warming |
| CO2 |
| CH4 |
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| q | How much of the global warming is caused by Natural climate change |
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| and by human activities? |
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| q | What is the sensitivity of Earth’s climate to the increases of |
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| greenhouse gases (CO2 and CH4) and sulfur dioxide (SO2)? |
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| q | What is the projection of the future climate change? |
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