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Essay

Phosphates and dissolved oxygen

Essay specific features

 

Issue:

Science

 

Written by:

Anonymous

 

Date added:

March 18, 2012

 

Level:

University

 

Grade:

A

 

No of pages / words:

3 / 759

 

Was viewed:

10168 times

 

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Essay content:

When too much phosphate enters a water, plant growth flourishes (Phosphates). Phosphates also stimulate the growth of algae which can result in an algae bloom(World Book Encyclopedia,1999). . Algae blooms are easily recognized as layers of green slime, and can eventually cover the water's surface. As the plants and algae grow, they choke out other organisms...
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As the plants and algae grow, they choke out other organisms. These large plant populations produce oxygen in the upper layers of the water but when the plants die and fall to the bottom, they are decomposed by bacteria which use a lot of the dissolved oxygen in the lower layers (Phosphates). Bodies of water with high levels of phosphates usually have high biological oxygen demand (BOD) levels due to the bacteria consuming the organic plant waste and subsequent low dissolved oxygen levels(Hooper,1998)...
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