Biogeochemical CyclesTHE CARBON CYCLE1. Watch this Crash Course video on the Global Carbon Cycle to learn more about how the cycle works, and why it is important.2. Below is a link to a lecture from the Howard Hughes Medical Institute about the geologic carbon cycle.3. Below is a link to a detailed, clickable carbon cycle with some great information that seem to be missing from some of the other sources.THE PHOSPHORUS CYCLE1. This link leads to a step-through animation of the phosphorus cycle. You can read through it, or listen to the narrated version.2. This link leads to additional videos and "activities" related to the sulfur and phosphorus cycles.THE NITROGEN CYCLE
1. Check out this Crash Course video on the Nitrogen and Phosphorus Cycles.2. Check out this video of a lecture on nitrogen fixation.3. This link is to an interactive nitrogen cycle that allows you to explore the steps in more detail.4. Learn about the use of nitrogen in agriculture with this sometimes simple, but also thorough combination of lectures, animations, clickable cycle, and a quiz.5. This link leads to another clickable, detailed nitrogen cycle that includes short video clips, as well as written descriptions of various steps of the cycle.http://sciencelearn.org.nz/Contexts/Soil-Farming-and-Science/Sci-Media/Interactive/The-terrestrial-nitrogen-cycleTHE SULFUR CYCLE1. This link is to an animation of the sulfur cycle.2. This link leads to additional videos and "activities" related to the sulfur and phosphorus cycles.3. This link will take you to animations related to Air Pollution and Acid Deposition, including how excess sulfur and nitrogen in the atmosphere can lead to some serious environmental problems.4. Check out the Crash Course video on pollution, including sulfur from the burning of coal.5. Here is a link to a lecture on the chemistry of Sulfur Dioxides and the Combustion of Coalhttp://www.hippocampus.org/HippoCampus/Earth Science?loadLeftClass=Course&loadLeftId=176&loadTopicId=112696. Here is a link to a lecture on how to neutralize the threat of acid rain.http://www.hippocampus.org/HippoCampus/Earth Science?loadLeftClass=Course&loadLeftId=176&loadTopicId=112727. Check out this EPA web page about the causes of acid rain. The page also has links to information on how acid rain is measured, regulations related to acid rain, and related pollution and climate issues.
THE HYDROLOGIC CYCLE1. Check out the Crash Course video on the Hydrologic and Carbon Cycles.2. This quick video discusses drought, and how to better understand how and why it occurs.
Last Modified on September 26, 2019