This time we are looking on the crossword clue for: Sap sucker.
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Possible Answers: APHID, APHIS.
Last seen on: –Wall Street Journal Crossword – October 15 2019 – Under Surveillance
Random information on the term “APHIS”:
An invasive species is a plant, fungus, or animal species that is not native to a specific location (an introduced species), and which has a tendency to spread to a degree believed to cause damage to the environment, human economy or human health.[dubious – discuss]
One study pointed out widely divergent perceptions of the criteria for invasive species among researchers (p. 135) and concerns with the subjectivity of the term “invasive” (p. 136). Some of the alternate usages of the term are below:
Scientists include species and ecosystem factors among the mechanisms that when combined, establish invasiveness in a newly introduced species.
While all species compete to survive, invasive species appear to have specific traits or specific combinations of traits that allow them to outcompete native species. In some cases, the competition is about rates of growth and reproduction. In other cases, species interact with each other more directly.
Researchers disagree about the usefulness of traits as invasiveness markers. One study found that of a list of invasive and noninvasive species, 86% of the invasive species could be identified from the traits alone. Another study found invasive species tended to have only a small subset of the presumed traits and that many similar traits were found in noninvasive species, requiring other explanations. Common invasive species traits include the following: