re: True or False: climate change

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Which is what?

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Will these 3 planets have the same weather patterns and ultimately climate?

Planet 0 (baseline)- Humans/life exists as it does today. Greenhouse gas emissions, total carbon released, water vapor concentration is within current levels, etc. Let's let this planet be a control in this hypothetical experiment.

Planet 1 (4x more in atmosphere)- Humans/life exists as it does today but humans have intentionally began releasing greenhouse gasses, water vapor, CO2, etc. into the atmosphere at incredible levels and over 1,000 years the amounts in the atmosphere is 4x that of Planet 0.

Planet 2 (1/4th in atmosphere)- Humans/life exists as it does today but humans have intentionally began reducing the amount of greenhouse gasses, water vapor, CO2, etc. in the atmosphere at incredible levels and over 1,000 years the amounts have shrunk to 1/4x of Planet 0 levels.