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en.wikipedia.org/wiki/Diatom

Diatoms are used to monitor past and present environmental conditions, and are commonly used in studies of water quality. Diatomaceous earth (diatomite) is a collection of diatom shells found in the earth's crust. They are soft, silica-containing sedimentary rocks which are easily crumbled into a fine powder and typically have a particle size ...

diatoms.org/what-are-diatoms

Diatoms also have ranges and tolerances for other environmental variables, including nutrient concentration, suspended sediment, flow regime, elevation, and for different types of human disturbance. As a result, diatoms are vital for assessment and monitoring biotic condition of waters.

www.britannica.com/science/diatom

Diatom, (class Bacillariophyceae), any member of the algal class Bacillariophyceae (division Chromophyta), with about 16,000 species found in sediments or attached to solid substances in all the waters of Earth. Diatoms are among the most important and prolific microscopic sea organisms and serve directly or indirectly as food for many animals. ...

sciencing.com/human-uses-diatoms-8532443.html

Diatoms are a type of protist, a microscopic organism. What makes diatoms remarkable is they have shells made from organic compounds and silica. These shells are left behind when a diatom dies. Diatomaceous earth is a mineral that is formed from fossilized diatom shells, and this is mined for a number of industrial ...

www.answers.com/Q/What_are_diatom_shells_uses

diatom shells settle to the ocean floor after diatoms die Asked in Biology What useful commercial products do the shells of a diatom algae yield? diatomious earth for filters and other uses.

academics.smcvt.edu/dfacey/AquaticBiology/Freshwater Pages/Diatoms.html

Diatoms. Kenn Perreault. Diatoms (class Bacillariophyta) are a type of mainly aquatic, photosynthetic algae. Similar to many other algae, they can live as unicellular organisms, colonial, or filamentous. Unlike most algae, though, they have a solid shells made of silica.

www.answers.com/Q/What_are_diatom_shells

What are diatom shells? Unanswered Questions. What's your go-to feel good film? How to buy a semi-pro (American) football league? Do Catholics believe in the Rapture like Protestants?

www.sprcentre.com/sprc/what_is_diatomaceous_earth.htm

Diatomaceous Earth has been used for at least two decades as a natural wormer for livestock.. For effective use, Diatom must be fed long enough to catch all the newly hatching eggs or cycling of the worms through the lungs and back to the stomach. A minimum of 60 days is suggested at 2% dry weight of the grain ration.

faculty.chas.uni.edu/~groves/LabExercise12.pdf

Diatoms, radiolaria, planktonic foraminifera DIATOMS: Diatoms are pigmented unicellular algae whose cell walls are silicified to form a shell or frustule that consists of two valves. Typically, one valve overlaps the other like the lid of a pillbox or an agar dish. Frustrules are either pennate (elliptical) or centric (circular) in outline.

www.thefreedictionary.com/diatom

Define diatom. diatom synonyms, diatom pronunciation, diatom translation, English dictionary definition of diatom. ... and often live in colonies. Diatom shells are made of two symmetrical parts called valves. diatomaceous (dī′ə-tə-mā′shəs) adjective. Thesaurus Antonyms Related Words Synonyms Legend: Switch to new thesaurus .