NCERT Important Questions Class 9 Science biology Chapter 14
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Chapter 14 Natural Resources
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
What is ODS?
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ODS is ozone depleting substance (e.g., CFCs) which causes breakdown of ozone present in ozone layer into oxygen.
ODS
2O₃ → 3O₂