✅ Correct Answer: O3
Source: This question is taken from the Everyday Science
✅ Correct Answer: Exosphere
✅ Correct Answer: 8.23%
✅ Correct Answer: Stratosphere
✅ Correct Answer: Metamorphic rocks
✅ Correct Answer: Chlorofluorocarbon
✅ Correct Answer: The release of chlorofluorocarbons into the atmosphere