It actually does. That is the whole premise behind global warming. CO2 alone would not be able to warm up the planet more than 1C - and that is if we keep burning fuels at max rate with no reduction.
The idea is that the 1C warming will cause the hotter air to support more water vapor, and water vapor is a much more potent gas than CO2, so it will warm the Earth additionally 2-3 or even 4C if we don't stop the CO2 emissions. This is the positive feedback loop. There are other feedback loops - some are negative and work towards decreasing the impact, for example the greening of the planet: if plants have more CO2, they will grow faster, bigger and be more resilient to drought, so they will absorb more CO2 overall.
If the "idea" above wouldn't be true, there would be no global warming crisis.
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It actually does. That is the whole premise behind global warming. CO2 alone would not be able to warm up the planet more than 1C - and that is if we keep burning fuels at max rate with no reduction.
The idea is that the 1C warming will cause the hotter air to support more water vapor, and water vapor is a much more potent gas than CO2, so it will warm the Earth additionally 2-3 or even 4C if we don't stop the CO2 emissions. This is the positive feedback loop. There are other feedback loops - some are negative and work towards decreasing the impact, for example the greening of the planet: if plants have more CO2, they will grow faster, bigger and be more resilient to drought, so they will absorb more CO2 overall.
If the "idea" above wouldn't be true, there would be no global warming crisis.