Environment & Ecology · Environment
According to scientific assessments under the Montreal Protocol, by when is the global stratospheric ozone layer projected to return to 1980 levels?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1By the end of the 21st century
- 2By 2037-38 for polar regions
- 3Late 2040s for all global regions
- 4Around mid-21st century (2040-2066 depending on region)✓
Correct answer
Around mid-21st century (2040-2066 depending on region)
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