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.
Cloudy Water. There are two very common, non harmful causes of cloudy water and one serious cause. In most cases, air bubbles or very fine particles of matter, such as dirt or organic matter get mixed in your drinking water. In very unusual cases, methane gas can cause this cloudy effect. Air Bubbles.