Social Sciences and History / Unit 12 SSH 1125 short lesson, about 20 seconds
Air, Land, Water Pollution; Eutrophication
Captions available
The idea
Eutrophication: nutrient-rich water promotes algae, and the dead blooms' decomposition consumes oxygen. A landfill buries solid waste against odor, vermin and unsightliness. The greenhouse effect traps longwave radiation in the lower atmosphere; the anchor puts its warming at thirty-five degrees Celsius.
In practice
Fertilizer runoff feeding a dead zone.
Where people slip
Thirty-five is the anchor's figure; the common statement is about thirty-three.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
- Nothing yet depends on this.
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