Module 5, Unit 4 - Part 3

Module 5, Unit 4 - Part 3 - 1. Does nitrogen fix easily -...

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1. Does nitrogen fix easily - convert easily from atmospheric forms into forms organisms can use? - No it takes a great amount of energy to convert atmospheric nitrogen into biologically useful forms. 2. Humans impact the nitrogen cycle in what ways? Describe four ways. - forest fires, farming, burning fossil fuels, using man-made fertilizers. 3. List three molecules that are vital to life and have a structural framework that includes phosphate groups. - Phosphorus, DNA and RNA. 4. The phosphorus cycle differs from other biogeochemical cycles in what way and Why? - It differs from the other major biogeochemical cycles in that it does not include a gas phase. 5. What is the largest reservoir of phosphorus? Describe the phosphorus cycle on land. Does the phosphorus cycle happen within aquatic ecosystems too? - The largest reservoir of phosphorous is in sedimentary rock. The phosphorus cycle on land starts when it rains and phosphates are removed from rocks via weathering and are then distributed throughout both soils and water. Plants take
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This note was uploaded on 05/26/2011 for the course SCIENCE 101 taught by Professor Smith during the Spring '11 term at Algonquin College.

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Module 5, Unit 4 - Part 3 - 1. Does nitrogen fix easily -...

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