Abiotic factors: Climate. With climate comes precipitation and temperature. Seasonal changes and location of the savannah affects what will grow and when. Snowfall will kill off any warm-season plant that cannot go dormant and rest through the winter to await spring.
, distension (dis-ten'shÅ­n), Although distension is historically the more correct spelling, the word is usually spelled distention in the U.S. The act or state of being distended or stretched. See also: dilation. [L. dis-tendo, to stretch apart] n a state of dilation. the state of being distended, or stretched out or enlarged; the act of distending. For individual local distentions see the location, e.g. abomasal distention.
1 The evaporation and subsequent collection of a liquid by condensation as a means of purification: the distillation of water.  The extraction of the volatile components of a mixture by the condensation and collection of the vapors that are produced as the mixture is heated: petroleum distillation.