This last chapter, we really started to get an idea of how biogeochemical cycles work and can “malfunction.” Here are a few interesting current events on the topic if you want to learn more: Nitrogen Cycle: Whales Help Fertilize Ocean With Floating Dung http://www.npr.org/templates/story/story.php?storyId=130437080 Phosphorus Cycle: Manure, Fertilizer Part Of Chesapeake’s Problem http://www.npr.org/templates/story/story.php?storyId=121565792 Carbon Cycle: [...]
Posted: November 14th, 2010 under Mr. W, On My Mind Post, Unit 4-Biogeochemical Cycles.
Tags: atmosphere, carbon, current events, cycles, eutrophication, fertilizer, nitrogen, phosphorus, sulfur, warming gases
The nitrogen cycle, the most nitrogenous cycle in fact, is crucial to the biosphere because nitrogen is essential for such compounds amino acids, protein, DNA, and RNA. Most nitrogen is found in the atmosphere, but this nitrogen is inert, “broken”, because it is triple bonded to itself (N2). And because of atmospheric nitrogen’s inert nature [...]
Today in class we focused on the phosphorus cycle, which is concentrated mostly in the lithosphere and oceans. Phosphorus is a very important element because it builds part of vital molecules such as ATP, ADP, DNA, and RNA–all molecules we recognize as part of the building blocks of life. Despite the fact that Phosphorus is [...]