Which term defines a well-tested, scientifically supported statement that explains how something works?
a.
hypothesis
b. law
c. observation
d. theory

A. Hypothesis

Explanation:

A hypothesis is a well-tested, scientifically supported statement that explains how something works.

c. live where it’s cold and icy

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.