What is a birth rate?
(1)Birth rate is the rate of birth in an area.


References
(1) Class discussion


[1] Birth rate- the amount of births to a total population in an area over a certain amount of time.









[1] http://wwwdelivery.superstock.com/WI/223/1566/X9/PreviewComp/SuperStock_1566-037783.jpg 20, Nov., 2008








mountain lion and cub
mountain lion and cub







References
[1]Birth Rate http://blogs.cocoondev.org/mpo/images/2003/02/24/jef.jpg