Question

what is jet stream ?​

Answer 1

Answer:

a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth. There are typically two or three jet streams in each of the northern and southern hemispheres.

"brief bursts of cold air have been blown into the region by the jet stream"

2.

a flow of exhaust gases from a jet engine.

Explanation:

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Answer 2

☘️ Answer :

Jet streams :

These narrow belt of high altitude (above 12,000 m) Westerly in the troposphere. Their speed marriage from about 110 km per hour in summer to about 184 km per hour in winter. A number of separate Jet streams have been identified. The most constant are the mid-latitude and the sub-tropical jet stream.