People with Home Septic Systems Often Flush Several Cups of a Powdered

question 33

Multiple Choice

People with home septic systems often flush several cups of a powdered substance down their toilets every month or two to keep their systems healthy.These powdered substances most likely contain

• A)bacteria and enzymes that help break down wastes.
• B)chlorine and other disinfectants that help to prevent soil contamination.
• C)chemicals that bind to heavy metals to keep them from leaching into the soil.
• D)acids that help to clean the insides of the walls of the pipes and septic tank.