Offshore wind farms change marine ecosystems, study shows

The expansion of offshore wind farms in the North Sea is making progress. But the consequences for the marine environment they are built in have not yet been fully researched. Scientists at the Helmholtz-Zentrum Hereon have ...

Letting farmland recover may let air quality recover, too

The USDA's Conservation Reserve Program (CRP) promotes sustainable agricultural practices to improve habitat, soil and water quality. It may have an unintended benefit of improving air quality, too, according to new research ...

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Concentration

In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. Four types can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes in homogeneous solutions.

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