6. (foll by: to) related (to) or dependent (on). 7. (when: postpositive, often foll by to) having a subsidiary or minor relationship (with). 8. (General Physics) (esp of a beam of light or particles) arriving at or striking a surface: incident electrons.
Answers (1) hill. Personally, if you use salt water properly, it won't cause any damages to your sunglasses. But if you rinse your sunglasses in salt water for a long time, it may cause some damages to the lens coating of your sunglasses. Anyway, you needn't rinse your sunglasses in salt water.
The biggest contributing factor to bottled water going bad is the bottle itself. Exposure to air causes the the chemicals in the bottle to react with the water within, and this can affect the taste and consistency of the water. Effects that are possible include off-tasting water or a minimal amount of cloudiness appearing in the water.