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biodiversidad

Biodiversity (a contraction of the phrase biological diversity) means the variety of life on earth, or within one particular ecosystem, in terms of the number of distinct biological species present. Tropical rainforests, for example, support a huge variety of species, so are highly biodiverse, while polar regions are far less so. Scientists worry that deforestation, such as that associated with planting crops for biofuels, animal feed and human consumption is reducing biodiversity. See also monoculture.

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Industri / Domain: Arkeologi Kategori: Evolusi

deriva genética

Changes in the frequencies of alleles in a population that occur by chance, rather than because of natural selection.