What species of deer lives in the Florida Keys and is an example of Foster's rule?
Foster's rule Foster's rule (also known as the island rule or the island effect) is an ecogeographical rule in evolutionary biology stating that members of a species get smaller or bigger depending on the resources available in the environment. For example, it is known that pygmy mammoths evolved from normal mammoths on small islands. Similar evolutionary paths have been observed in elephants, hippopotamuses, boas, deer (for example Key deer) and humans.
Law of Life The Law of Life is a term coined by author Farley Mowat in his 1952 book "People of the Deer", and popularized by Daniel Quinn, to denote a universal system of various natural principles, any of which tend to best foster life—in other words, any of which best guides behavior that tends toward the reproductive success and survival of some particular gene pool. The idea posits that, in general, the most fit organisms instinctively behave according to some natural rule (often, these rules vary among and are specific to the species). Since "every" organism has some instinctive "law" it can follow to be the most reproductively successful, this very notion is a sort of law itself, true of all living beings: thus, the Law of Life.