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.
Answer:
87. up 120. down is answers
Explanation:
The best statement here to build someone's self esteem would be a. I am really proud of you.
This is a positive statement and will help to increase someone's self esteem. All the other statements are negative and hurtful and would decrease someone's self esteem making them feel bad about themselves.
An author's credentials can determine a health source's credibility. None of the other options would apply to credibility. When it comes to health, if you want to make sure that what you are researching or reading is authentic and reliable you need to find out whether the author is a professional health expert or not. You can do this by finding out their credentials.
