21.   Tufted Duck are unusual on salt water, except in severe winter weather.

22.   We waded ashore coughing up salt water and drenched to the skin.

23.   Why does the egg float in salt water?

24.   Salt water is pumped up from deep below the ground.

25.   Salt water has more buoyancy than fresh water.

26.   Salt water is much more conductive than fresh water is.

27.   Try gargling with salt water as soon as a cough begins.

28.   He gargled the salt water, then spit it out.

29.   He gargled with salt water.

30.   The seeds are not resistant to salt water and immersion kills them.