Answer:
Pure water, Great Salt Lake and Saliva
Explanation:
The pH of pure water is 7.0.
The pH of Great Salt Lake has a range of 7.7 to 8.2. The northern part of the lake has a a pH of 7.7 and the southern part has a pH of 8.2.
The pH of saliva has a range of 6.2-7.6. The pH of the saliva is always maintained at neutral. The average pH of saliva is 6.7 and the pH of saliva never falls below 6.3.
The pH of ammonia is 11.0.
