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Click Play to test your predictions.

To test whether this feedback also works in the other direction, deactivate the “Water vapor” feedback, lower the CO₂ concentration to 300 ppm and then click Play.

Click on the double arrow to go back and activate the “Water vapor” feedback, without clicking Play.

- Compared with the case without feedback, what do you think will happen with the concentration of water vapor and the greenhouse effect as the temperature decreases?

- What effect would this have on the equilibrium temperature?