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bicarbonate

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carbonate hardness

Overview page. Subjects: Environmental Science.

The hardness in water that is caused by bicarbonates and carbonates of calcium and magnesium. See also hard water.

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dissolved load

Overview page. Subjects: Environmental Science.

Material carried in solution by a river; capable of passing through a 0.45-µm membrane filter (S. Trimble et al., eds (2006) Encycl. Water Sci.).

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hard water

Overview page. Subjects: Environmental Science — Public Health and Epidemiology.

Alkaline water that contains dissolved mineral salts (particularly calcium and magnesium bicarbonates), which reduces the cleansing power of soap and produces limescale in hot water...

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lithotroph

Overview page. Subjects: Genetics and Genomics.

An organism that obtains energy from the oxidation of inorganic compounds or elements (compare organotroph). Sometimes the term is inaccurately used as a synonym of autotroph.

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photosynthetic rate

Overview page. Subjects: Environmental Science.

The rate at which plants convert dissolved carbon dioxide and bicarbonate into useful products by photosynthesis.

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respiration

Overview page. Subjects: Biological Sciences — Medicine and Health.

1. In physiology, the process of breathing.

2. In biochemistry, the intracellular oxidation of substrates coupled to ATP production. Anaerobic respiration...

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saliva

Overview page. Subjects: Medicine and Health.

n. the alkaline liquid secreted by the salivary glands and the mucous membrane of the mouth. Its principal constituents are water, mucus, buffers, and enzymes (e.g. amylase)....

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