I believe it’s the troposphere
This is because a sprinter runs short distances and not long distances like runners do.
Answer:
about 70
Explanation:
At least 69 of these chemicals are known to cause cancer, and many are toxic.
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.
