T1R1O1P3O1S1P3H4E1R1E1S1
19 points
TROPOSPHERES is validvalid
TROPOSPHERE, [n]
TROPOSPHERE, a region of the atmosphere from 25,000 feet to 55,000 feet, the boundary between the upper troposphere and the lower stratosphere [n]
TROPOSPHERE, [n]
TROPOSPHERE, a region of the atmosphere from 25,000 feet to 55,000 feet, the boundary between the upper troposphere and the lower stratosphere [n]