According to John Sterman's Bathtub Model, how much of the CO₂ being emitted into the atmosphere is retained in the atmosphere for up to 200 years.

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According to John Sterman's Bathtub Model, approximately 45% of the CO₂ being emitted into the atmosphere is retained in the atmosphere for up to 200 years. The rest is either absorbed by the oceans or land (30%) or taken up by vegetation through photosynthesis (25%). Therefore, option B is the best choice.

According to John Sterman's Bathtub Model, How Much of the CO₂