Crossword puzzle clue "fragile atmosphere layer"

Here are the possible solutions for fragile atmosphere layer clue

Answer
Clue
Relevancy
ozone
Clue
Fragile atmosphere layer
Fragile layer
Atmosphere layer
Upper atmosphere layer
Endangered atmosphere layer
___ layer (upper atmosphere part)
Upper-atmosphere layer
Threatened atmosphere layer
Definition
an allotropic form of oxygen present in the atmosphere

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