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озонски омотач
A layer of ozone in the lower portion of the stratosphere -- 12 to 15 miles above the Earth's surface -- which helps to filter out harmful ultraviolet rays from the sun. It may be contrasted with the ozone component of photochemical smog near the Earth's surface which is harmful.
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мали мозак
The portion of the brain in the back of the head between the cerebrum and the brain stem.