A chemical that is toxic to microrganisms. Biocides are ...
Kilauea is a shield volcano in the Hawaiian Islands, the ...
Ozone loss in the Arctic or the North Pole. The Earth is ...
Wild mint is a common herb in the Bistra Mountain, ...
Lake of Puigcerda was named after the capital of Catalan ...
In seismology, the depth of focus refers to the depth at ...
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