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CrashCourse · 发布于 2012年12月24日
Hank introduces us to biogeochemical cycles by describing his two favorites: carbon and water. The hydrologic cycle describes how water moves on, above, and below the surface of the Earth, driven by energy supplied by the sun and wind. The carbon cycle does the same... for carbon! Table of Contents 1) Hydrologic Cycle - 1:15 A) Clouds - 2:13 B) Runoff - 3:06 C) Oceans - 3:41 D) Evapotranspiration - 4:25 2) Carbon Cycle - 5:12 A) Plants - 5:48 B) Fossil Fuels - 6:40 C) Oceans - 7:12 D) Global Warming - 7:35 References http://ga.water.usgs.gov/edu/watercyclecondensation.html http://harvardmagazine.com/2002/11/the-ocean-carbon-cycle.html http://www.visionlearning.com/library/module_viewer.php?mid=95 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids
