![How many different types of primary pollutants together contribute to about 90 per cent of the global air pollution?](https://www.gkseries.com/blog/wp-content/uploads/2021/12/How-many-different-types-of-primary-pollutants-together-contribute-to-about-90-per-cent-of-the-global-air-pollution.png)
Q. How many different types of primary pollutants together contribute to about 90 per cent of the global air pollution?
- Three
- Five
- Seven
- None of the above
Answer: (b) Five.
Answer: (b) Five.
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