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.
Plant cells expand by taking up water into their vacuoles.
Water caltrop
Rackstraw Downes, Presidio in the Sand Hills Looking East with ATV Tracks and Water Tower.
Waterspouts are tornadoes that occur over warm-water bodies, instead of over land.
When lithium chloride, LiCl, dissolves in water, which of the following is forme
A Bat Ray cruising through the water column below the "sunburst." Bat Rays are types of ...