Rational Expressions Short Course. 1  Definitions covers the definition of a rational expression including what it means for a rational expression to be undefined and simplified.  Arithmetic reviews addition, subtraction, multiplication and division of rational expressions.
Taxonomic Hierarchy Categories were also introduced by Linnaeus. They are also known as Linnaean hierarchy. It is defined as sequence of categories in a decreasing or increasing order from kingdom to species and vice versa. Kingdom is the highest rank followed by division, class, order, family, genus and species.Species is the lowest rank in the Hierarchy.The hierarchy has two categories which are obligate and intermediate.Obligate means they are followed strictly and range from kingdom to species as said above.pecies is the lowest rank in the Hierarchy. The hierarchy has two categories which are obligate and intermediate. Obligate means they are followed strictly and range from kingdom to species as said above.
The basic method of classifying the organisms has been the taxonomy. It could be very confusing to understand the difference between taxonomy and classification, yet it is very important to do so. This article is an attempt to discuss that matter in summary. Taxonomy. Taxonomy is the discipline of classifying organisms into taxa by arranging them in a highly ordered manner. It is important to notice that taxonomists do the naming of taxa with Kingdom, Phylum, Class, Order, Family, Genus, Species, and other taxonomic levels.