ozone layer

Noun
  1. A layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun (synset 109405619)
    is a type of: layer - a relatively thin sheetlike expanse or region lying over or under another
    has: ozone hole - an area of the ozone layer (near the poles) that is seasonally depleted of ozone
    is a part of: stratosphere - the atmospheric layer between the troposphere and the mesosphere
    same as: ozonosphere

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