What if the following is not a product of science? a. your water bottle. b. lights in your home. c. sunscreen. d. none of these

The answer is D, none of these.

easy

explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.