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The Hydrosphere Keywords

Evaporation ­ the change of water from liquid to gas as hydrogen bonds are broken.

Hydrogen bond ­ the weak electrostatic bond formed between water molecules, which
gives water a high boiling point.

Anomalous expansion ­ usual expansion, usually applied to water which expands as it is…

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Pathogen ­ an organism that causes disease.

Coliform count ­ a measure of the sewage pollution based in the presence of the faecal
bacterium E.coli.

Anaerobic ­ a process or organism that does not require oxygen.

Topography ­ the 3D shape of the landscape.

Porosity ­ a measure of the…


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