Abiotic+factors+Period+8

 A B I O T I C F A C T O R S ~ {http://t1.gstatic.com/images?q=tbn:r5jJoQPbuszeLM:http://lx.my974.net/wp-content/uploads/2008/07/4.JPG} {http://t3.gstatic.com/images?q=tbn:iR2345KkDBWhTM:http://nopests.com/blog/wp-content/uploads/2009/08/hot-thermometer.gif} {http://t2.gstatic.com/images?q=tbn:5Pdiilntcg6snM:http://www.news.cornell.edu/stories/Nov08/BlackCarbonFire.jpg} Abiotic Factors: They are the non-living parts of an organism's environment. They are chemical and physical factors. Abiotic factors have large effects on living things and often determine which species of organisms will survive in a given area. Some examples of abiotic factors include temperature, soil type, moisture, and air currents. TEMPERATURE During the dry season, winter, in Savannas it is usually a few degrees cooler than during the wet season. However, Savannas are warm year round, because they are located in the tropical latitudes. During the summer temperatures range from 78° to 86° F. In addition, in a Savanna the temperature does not change frequently or drastically. SOIL The soil in a Savanna has a rapid drainage of water. The soil has a thin organic layer which is created by a partical decomposition of plant and animal matter. Secondly, this layer provides vegetation with nutrients. RAINFALL A savanna's wet season is throughout summer. During the wet season it becomes very hot and humid. There is an annual precipitation that averages between 15-35 inches. From December to February hardly any rain falls at all. Additionally, for atleast five months of the year, during the dry season, less than 4 inches of rainfall a month is received. FIRES Fires can occur in a Savanna from seasonal lightning. 