There are a number of various outcomes for the carbon dioxide molecules released into the air, but those of which Jack and Jill are part are (luckily) absorbed into plants.   The actions of wind separate the two, and Jack is absorbed into the chlorophyll of an apple tree in a greenhouse in Fairbanks, Alaska (demonstrating the complete lifecycle of the carbon atom), while Jill is absorbed into a birch tree a few miles away and becomes part of the organic material of the tree’s leaves. It happens to be the summertime.  As the seasons move on, the birch leaves begin detaching from the branches and become susceptible to the actions of wind.  A particularly hard gust of wind hits a tree on the University campus, and the leaves are blown along the air (accelerated along with the air mass).  The fascination of this phenomenon is not lost on a certain esteemed physics professor, as they swirl past his head when he walks into the Reichardt Building.

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