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.
This is something most people encounter in biology classes, and it is known as the Linnaean Taxonomy. In WordPress, a taxonomy is a grouping mechanism for some posts (or links or custom post types). The names for the different groupings in a taxonomy are called terms. Using groupings of animals as an example, we might call one group birds, and another group fish. Fish and birds are terms in our taxonomy. As an example from WordPress, a category or tag (see next section) is a term.