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As discussed in the lessons, human societies in the past were affected by climate change in what ways:

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Suppose a planet exists with the same atmospheric composition as the Earth. On that planet, atmospheric CO₂ concentration rose from 200 to 600 ppm over 100 years, then net emissions fell to less than zero (and turned into a strong net sink). What would that planet's atmosphere?
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What happens to the North Atlantic Ocean if the Atlantic Overturning Circulation switches off?
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During a La Niña event, Australia's spring is typically ...

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Which of the following is the best example of a "top-down" extreme event?

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As discussed in the lessons, climate changes that did adversely affect human societies in the past (before the industrial revolution) weren't due to:
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In widget above, the dots wiggle left to right in the top right panel. What is not a correct explanation for this wiggle?

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Match each type of forcing with the climate response based on the Anthropogenic climate forcing lesson.
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Atmospheric circulation on large scales is not fundamentally driven by:

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What do you see in the figure below?

Vostok temperature and CO2 record

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