The only atmospheric layer containing measurable amounts of water is the
a. stratosphere.
c. mesophere.
b. troposphere.
d. thermosphere.

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The only atmospheric layer containing measurable amounts of water is the troposphere. 

The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. Weather occurs in this layer. 2) Many jet aircrafts fly in the stratosphere because it is very stable. Also, the ozone layer absorbs harmful rays from the Sun.

The second one is the answer edg.