Most allergic reactions occur with rashes and trouble breathing.
Answer:
True
Explanation:
Cross Connection and Backflow are so important because they could introduce dangerous substances into the safe drinking water system. All water utilities work hard to meet high standards of safety in order to protect public health from backflow due to cross connection.
It is a positive relationship because they go hand in hand and both promos are about the same thing
220-your age
so subtract 220 from how old you are.