Which is the best way to pay for an online purchase?

Sadie and her mom were at a hardware store to purchase smoke detectors for their new home. sadie's mom was unsure how many units she should purchase. what is the general recommendation? a. one large one for the middle of the house b. every room in the house should have one c. kitchen, garage and laundry room- since those are where most fires happen d. every living area including the hallway by the bedrooms should have a smoke detector.

Over half of the people in the united states rely on groundwater for drinking water. true or false

Identity one muscle structure and describe the role the structure plays in muscle contraction.