What diseases were there in the trench in World War 1? Trenche foot was very common in the trench warfare. caused from wet feet and not being able to change their socks and boots. Edit
Repels Sharks No.........human urine actually repells sharks and other fish.
Urine pH can be made more acid by increasing protein intake from animal and fish sources. Examples include human table scraps such as beef (steak/hamburger) and fish. Low cost urine test for humans can be used for monitoring and verifying that a cat's pH is below 6.8.