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Download PDF by Sherman Hollar: A closer look at bacteria, algae, and protozoa

By Sherman Hollar

ISBN-10: 161530584X

ISBN-13: 9781615305841

Describes the actual features of bactera, algae and protozoa, and a few of the clinical and business makes use of of bacteria.

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Extra resources for A closer look at bacteria, algae, and protozoa

Sample text

They exist in very large numbers in the ocean and in bodies of fresh water. When diatoms shed their shells, the shells fall to the bottom and can form deposits that may build up to several meters. Diatomaceous earth—sedimentary rock formed from such deposits—has a number of commercial 62 feAtures And tyPes of AlgAe applications, including use in filters, insulation, and abrasives. ” The name refers to the fact that some species of dinoflagellates are capable of bioluminescence, a A species of dinoflagellate known as Noctiluca scintillans, commonly called sea sparkle, is a type of algae that can aggregate into an algal bloom, producing substances that are potentially toxic to marine life.

The phaeophytes are an important source of algin, a substance used in food processing and other industries. Certain species of brown algae are also used as fertilizer, and several, such as species of Laminaria, are eaten as a vegetable in Asia. 56 feAtures And tyPes of AlgAe The Sargasso Sea A free-floating meadow of seaweed almost as large as a continent lies between the United States and Africa in the North Atlantic Ocean. This is the famous Sargasso Sea. Christopher Columbus discovered it as he sailed toward the New World in 1492.

This is the famous Sargasso Sea. Christopher Columbus discovered it as he sailed toward the New World in 1492. Its presence suggested that land was near and encouraged him to continue. The tangled seaweed of the Sargasso Sea is brown marine algae belonging to the genus Sargassum, popularly called gulfweed. Most of the weeds are S. natans, a free-floating species, but many other species of Sargassum grow attached to rocks along coasts. S. natans, which is kept afloat by its small but prominent berrylike air bladders, travels with the wind and current.

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A closer look at bacteria, algae, and protozoa by Sherman Hollar

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