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Propagule pressure plays an important role in species invasions (Groom, 2006). Charles Darwin was the first to study specific factors related to invasions of non-native species. In his research he identified that few members of the same genus were present in habitats containing naturalized non-indigenous species (Colautti et al., 2006).
A crab-eating macaque using a stone. Tool use by non-humans is a phenomenon in which a non-human animal uses any kind of tool in order to achieve a goal such as acquiring food and water, grooming, combat, defence, communication, recreation or construction.
Replication has been called "the cornerstone of science". [9] [10] Environmental health scientist Stefan Schmidt began a 2009 review with this description of replication: Replication is one of the central issues in any empirical science. To confirm results or hypotheses by a repetition procedure is at the basis of any scientific conception.
Unsolved problems relating to the structure and function of non-human organs, processes and biomolecules include: Korarchaeota (archaea). The metabolic processes of this phylum of archaea are so far unclear. Glycogen body. The function of this structure in the spinal cord of birds is not known. Arthropod head problem. A long-standing zoological ...
Was there ever a collision of Earth with the hypothesized planet of Theia, which gave birth to the Moon? [1] There is compelling evidence, such as measures of a shorter duration of the Earth's rotation and lunar month in the past, that suggests the possibility that Earth's Moon was much closer to Earth during the early stages of Solar System formation.
The answer to a research question will help address a research problem or question. [5] Specifying a research question, "the central issue to be resolved by a formal dissertation, thesis, or research project," [6] is typically one of the first steps an investigator takes when undertaking research.
In 1999, Metabolite sued LabCorp for infringement of a patent covering a diagnostic test. The single claim at issue, claim 13, is reproduced in full below: "A method for detecting a deficiency of cobalamin or folate in warm-blooded animals comprising the steps of: "assaying a body fluid for an elevated level of total homocysteine; and "correlating an elevated level of total homocysteine in ...
When preening, a bird (such as this red lory) draws individual feathers through its beak, realigning and re-interlocking the barbules.. Preening is a maintenance behaviour found in birds that involves the use of the beak to position feathers, interlock feather barbules that have become separated, clean plumage, and keep ectoparasites in check.