Final answer:
Reverse osmosis method for water filtering has pros of effectively removing contaminants and minimal maintenance, with cons including low flow rate due to small pore size and decreased pH levels.
Explanation:
Pros:
- Removes all types of contaminants to some extent
- Requires minimal maintenance
Cons:
- Has limited or low flow rate due to small pore size
- Lowers the pH of the water making it more acidic
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