Question

changing your toilet can reduce water pollution because
a. the sewage is partially treated in the toilet before entering the sewer system
b. chemicals added by new toilets neutralize the pathogens in the water
c. more efficient plumbing uses more water and creates larger volumes of waste
d. more efficient plumbing uses less water and creates smaller volumes of waste
please select the best answer from the choices provided
o a
o b
o c
o d

Explanation:

To determine the answer, we analyze each option:

• Option a: Toilets don't treat sewage; sewage treatment happens at treatment plants, so this is incorrect.
• Option b: New toilets don't add chemicals to neutralize pathogens; this is not a function of toilets, so incorrect.
• Option c: More efficient plumbing using more water would increase waste volume, not reduce pollution, so incorrect.
• Option d: More efficient plumbing (like low - flow toilets) uses less water, which reduces the volume of wastewater (sewage) generated. Less wastewater means less water pollution as there's less volume to treat or that can carry pollutants, so this is correct.

Answer:

d. more efficient plumbing uses less water and creates smaller volumes of waste