#1. Which layer of the atmosphere does the space shuttle travel in? #2. Which of the following is important for a temperature inversion? (Points : 3) two layers of warm air, one on top of the other a layer of cold air over one of warm air two layers of warm air a layer of warm air over a layer of cold air. #3. Earth's second atmosphere (atmosphere II) was a thick atmosphere of primarily water vapor and carbon dioxide. What effects did this have on earth? (Points : 3)
Helium and hydrogen gases escaped earth's gravity.
Heat energy was retained and water vapor condensed.
Ultraviolet light split water vapor into hydrogen and oxygen.
