Question

why does Jets fly below the lower layer of stratosphere​

Answer 1

Answer:Jet aircraft fly below the lower layer of stratosphere to avoid the turbulence which is common in troposphere below.

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Answer 2

Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below . The stratosphere is very dry , air there contains little water vapour because of this very few cloud are found in the layer , almost all clouds occur in the lower.

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