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mrsptu m. pharm. (pharmaceutical chemistry) 2016
mrsptu m. pharm. (pharmaceutical chemistry) 2016

... Optical Isomerism in Compounds Containing No Chiral Atom: Biphenyls, Allenes, Compounds with Exocylic Double Bonds, Spiranes, Chirality due to a Helical Shape, Chirality caused by Restricted Rotation of other Types. Cis-Trans Isomerism: Resulting from Double Bonds, Monocyclic Compounds, Fused Ring S ...
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... Carbon dioxide (O=C=O) is a linear molecule with two carbon-oxygen double bonds. It is a colourless gas and it is heavier than air. CO2 is present in air and plants use it to produce carbohydrates during photosynthesis. Sunlight ...
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a river of grass

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Freshwater environmental quality parameters

Freshwater environmental quality parameters are the natural and man-made chemical, biological and microbiological characteristics of rivers, lakes and ground-waters, the ways they are measured and the ways that they change. The values or concentrations attributed to such parameters can be used to describe the pollution status of an environment, its biotic status or to predict the likelihood or otherwise of a particular organisms being present. Monitoring of environmental quality parameters is a key activity in managing the environment, restoring polluted environments and anticipating the effects of man-made changes on the environment.
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