Environment & Ecology · Environmental Science
An ozone hole is defined as an area where the atmospheric concentration of ozone drops below which of the following thresholds?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1220 Dobson Units✓
- 2300 Dobson Units
- 3320 Dobson Units
- 4400 Dobson Units
Correct answer
220 Dobson Units
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