1 Microorganisms are divided into seven types: bacteria, archaea, protozoa, algae, fungi, viruses, and multicellular animal parasites (helminths).  Each type has a characteristic cellular composition, morphology, mean of locomotion, and reproduction.
As of 2014, 38,761 people live in Cooke County. The population of the county was 77.2 percent Anglo, 16.7 percent Hispanic, and 3.2 percent African American. The largest town in the county is Gainesville, with a 2014 population of 16,502.
1 Houston's population in 1850 was listed as 2,396. 2  The metro area's population of 5.95 million in 2010 is 6th largest among U.S. metropolitan statistical areas, according to www.census.gov, and a 26% increase since 2000. 3  Harris County's population is 4,092,459.