Which of the following might occur if people fail to conserve water?
a. increased sewage system failures
b. increased numbers of natural pollution filters
c. increased water supply
d. increased wildlife habitats

The answer is a. increased sewage system failures.  Systems require water to flush wastes and other contaminants from the sewers when water decreases it affects the functions of the sewer systems and that can lead to contamination of water and result in water-related diseases.

a is the answer

Explanation:

answer; first blank(1); 30% two(2); salmonella; i believe this is correct; //good luck;