Phosphorus Background Information

Phosphorus increases the growth of algae

Surface water supports the growth of microscopic floating organisms called plankton. One type of plankton is algae. The growth of algae and aquatic plants requires phosphates.

Humans use phosphates in dental cements, water softeners, detergents, rust proofing and processed foods. Phosphoric acid is used in cola soft drinks. Dicalcium phosphate is a food supplement for cattle. Calcium phosphate is an ingredient in plant fertilizers.

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• What is phosphorus?
  
  
• How is phosphorus cycled through ecosystems?
  
  
• Review Questions and Quiz