00:46 GMT +321 October 2019
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    • Sciurus niger - fox squirrel
    • Snakehead - Channa argus.
    • The northern snakehead fish, Channa argus
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    • Rusty crayfish flexing its major chelae in the lab at Carthage College, in Kenosha, WI
    • Plotosus lineatus
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    • Onyx Slipper Snail; Length 3.2 cm; Originating from Pacific coast of Mexico; Shell of own collection, therefore not geocoded
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    Sciurus niger - fox squirrel.

    Scientists have identified 66 species of plants and animals that pose the greatest threat to biodiversity and ecosystems. These species, entering and falling into new territories, displace the local flora and fauna.

    Scientists considered eight species to be the most dangerous, another 40 to be high-risk, and 18 others to be medium-risk.

    Species considered by the team of researchers included plants, terrestrial invertebrates and some marine and freshwater vertebrates and invertebrates.

    Tags:
    species, scientists, danger, Europe
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