Question

I am doing a presentation on Phosphorus and am addressing the following (below) and would appreciate information for all of the headings THANK YOU

For assignment 3 you will exhaust your understanding of an assigned biogeochemical element by addressing and TEACHING the following topics in your presentation:

1. Introduction

2. The global cycle/ elemental forms

3. Temporal variation

4. The soil cycle/ elemental forms

5. Role of element in soil and how it is affected by the physical, chemical, and biological environment You may consider answering the following questions within your presentation:

6. What are the global scale pools and fluxes?

7. What are the stable and labile forms of your element and what are the processes involved in creating these elemental forms?

8. How does the cycling of your element influence ecosystem structure and function?

9. What are the environmental implications if the elemental cycle is disturbed?

10. Are there concerns regarding ecosystem health, soil health, human health?

Answer 1

Hi, we are only allowed to answer one question per time, as introduction is easy to find, let me help you with the global phosphorous cycle:

Unlike other elements, atmosphere does not play an important role in phosphorous (P) movement, then, P moves through the earth and water systems, mostly in the forms of hydrogen phosphates (H₂PO_4^- and HPO₄) and lessly in other mineral forms such as CaP and FeP. Phosphorous can also be found in several organic compounds on living things, such as DNA, proteins, cofactors, and some sugars. Due that there is almost no movement of phosphorus gas in the atmosphere, P cycle is one of the slowest in the planet, taking several years for recovering it naturally in soils, the only known gas containing phosphorous in the atmosphere is phosphine gas (PH₃) with very low concentrations (less than 1%).