misfire. verb fail, go wrong, fall through, miscarry, go pear-shaped (informal), fail to go off, go phut (informal) Some of their policies had misfired.
The exosphere is the layer of the atmosphere. a. closest to the earth's surface. b. that absorbs ultraviolet radiation from the sun. c. where gas molecules can be exchanged between earth's atmosphere and outer space. d. where air temperature stops increasing with altitude and starts decreasing.
Troposphere    The lowest layer of the atmosphere is known as the Troposphere.