Im pretty sure that this is the nerves which is called the nerves system I think
The mitral, tricuspid, and aortic
The vain it defends the bone
Answer: your answer is A. The quality of air and water at places where people live,work, and go to school.
Explanation: environment is a where people live together.
1 Gallon = 3785 mL
5mL used in = 1 day
1 mL used in = 1/5 day
1 Gallon used in = 3785 / 5 = 757 days
