| http://www.w3.org/ns/prov#value | - In 1999, President Clinton signed Executive Order 13112, which aimed to prevent the spread of invasive species and created the National Invasive Species Council.[25] Executive Order 13112 defines ???alien species??? as ???any species, including its seeds, eggs, spores, or other biological material capable of propagating that species, that is not native to that ecosystem.???[26] This definition sug
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