Answer:
Create an air gap to prevent backflow.
Explanation:
An air gap prevents contamination of the water because it creates a space between the water outlet and a contaminated source. So, if there is, for example, a decrease in the pressure that pumps the water to the faucet, the water the air gap will prevent the contamination of potable water and the cause of different illnesses.
<span>The question says,'a person metabolism remain constant throughout life. The statement is false. Metabolism is the sum total of all the chemical activities which occur in the body in order to sustain life. Many factors affect metabolism per time, these include: physical activities, hormonal imbalances, age, disease conditions, pollutants, toxins, lack of essential nutrients, dehydration, etc. </span>
