|
Each organic being is striving to multiply to be vigorous, healthy, and to survive - often at the expense of members of its own species or those of a competing species. Chapter IV: Natural Selection; or the Survival of the Fittest The "fitness" of a species is modified by several different processes. For example, sexual selection may occur when males of a population must compete with other males to possess mates. Those possessing some advantage -better weapons, greater energy, or more beautiful song or plummage - are more apt to survive or attract a mate, likely to leave the most progeny. Over time, such gradual adaptation, along with changing conditions and outside competition, can cause "an infinite diversity in structure, constitution, and habits, advantageous to one set of offspring over another, or to one variety within a species over another.
Approximate Word count = 428
Approximate Pages = 1.7
(250 words per page double spaced)
|
|
