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Please copy/paste the following text to properly cite this HowStuffWorks article:

"Algae." 29 October 2008. HowStuffWorks.com. <http://science.howstuffworks.com/algae-info.htm> 15 December 2009.

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Classification

Algae, with the exception of blue-green algae, are classified in the kingdom Protista; blue-green algae are classified in the kingdom Monera. Some biologists, however, include the brown, the red, and the green algae in the plant kingdom.

Paramecium

Paramecium, a one-celled organism that lives in water. It is common in stagnant ponds, where it feeds on yeasts and bacteria. The paramecium is 1/250… See more »

Amoeba

Amoeba, or Ameba, a protozoan (one-celled organism) noted for the simplicity of its body structure. Amoebas (or amoebae) are widely distributed over… See more »

Rotifer

Rotifer, a microscopic animal. There are approximately 2,000 species. Most species live in freshwater; some live in the sea; and a few live as… See more »

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Classification

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