What is an advantage of using chlorine gas to disinfect drinking water supplies?
A) It provides residual protection against pathogens.
B) It gives the water a fresh taste.
C) Residual chlorine in water helps to whiten teeth.
D) Excess chlorine is absorbed in our bodies as a mineral supplement.
Question 2
Why are there few odors emanating from a properly managed composting toilet?
A) Tight seals prevent the escape of odors.
B) Odors are absorbed by a layer of water.
C) Decomposition is aerobic.
D) The ventilation system steers odors through a carbon filter.
Cade and colleagues discovered a way to improve athletic performance and prevent salt and water imba
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A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...
The movement of water and nutrient through a tree
Different bodies of water have contrasting physical properties