The lowest part of the troposphere, where friction with the Earth's surface influences air flow, is the planetary boundary layer. This layer is typically a few hundred meters to 2 km (1.2 mi) deep depending on the landform and time of day.he troposphere is the lowest portion of Earth's atmosphere. It contains approximately 75% of the atmosphere 's mass and 99% of its water vapor and aerosols.
Bushnell is a city in Sumter County, Florida, United States. The population was 2,050 at the 2000 census. According to the U.S Census estimates of 2005, the city had a population of 2,119. It is the county seat of Sumter County.
Washington County, Florida. For counties with a similar name, see Washington County (disambiguation). Washington County is a county located in the state of Florida. As of the 2010 census, the population was 24,935. Its county seat is Chipley. Washington County is a prohibition or entirely dry county, meaning that the sale of alcoholic beverages is banned in the county.