If you are asking what would happen if we stopped emitting greenhouse gasses entirely, the answer is that the planet’s climate would no longer be changing due to human causes.
If we just cut emissions by 50%, the planet would continue to warm although more slowly, giving us more time to cease emissions and reducing damages from changing the climate.
If we could somehow remove more greenhouse gasses than we emit from the atmosphere, the planet would cool. We are pretty far from this.
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