This region of the atmosphere is named for its chemical ...

[jilianpiloj]

This region of the atmosphere is named for its chemical homogeneity: ________.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

First describe the hydrologic cycle. Then give important characteristics of water vapor and its distribution around the earth.
 
  What will be an ideal response?

[Kjones0604]

Answer to Question 1

Answer: homosphere

Answer to Question 2

Answer: Water is constantly exchanged between the planet and the atmosphere in what is called the hydrologic cycle. Water continuously evaporates from both open water and plant leaves into the atmosphere, where it eventually condenses to form liquid droplets and ice crystals. These liquid and solid particles are removed from the atmosphere by precipitation as rain, snow, sleet, or hail. Because of the rapidity of global evaporation, condensation, and precipitation, water vapor has a very short residence time of only 10 days. Despite the wide range of physical comfort levels we experience in response to variations in water vapor content, the actual range of water vapor content is really quite limited. Near Earth's surface, the water vapor content ranges from just a fraction of 1 percent of the total atmosphere over deserts and polar regions to about 4 percent in the tropics. At higher altitudes, water vapor is even rarer.

[jilianpiloj]

Excellent

[dawsa925]

Gracias!