Species and populations are probably the two most commonly used ecology terms, but they are often difficult concepts to grasp. Throughout this chapter, they will be discussed in detail, expanding on the definitions from previous chapters and explaining why there are no universally acceptable definitions.
Jefferson County, Arkansas is a county located in the U.S. state of Arkansas in the area known as the Arkansas Delta, that extends west of the Mississippi River. As of the 2010 census, the population was 77,435. Its county seat and largest city is Pine Bluff. Jefferson County is Arkansas's 21st county, formed on November 2, 1829, from portions of Arkansas and Pulaski counties, and named for Thomas Jefferson, third President of the United States.
Box 505 | Monticello, AR 71657 | (870) 367-4400. The city of Monticello was founded in 1849 and is presumably named after the Virginia home of President Thomas Jefferson. Also, many early settlers in Drew county were families who were originally from Virginia. The town was incorporated in 1852, and is the home of the University of Arkansas at Moniticello. Population: 9457.