Each student in a science class of 25 performed the same experiment. Each student shares their data and it is recoded on a class data table. Tamara compared the data that she personally collected in her experiment to the
data collected by the rest of her classmates.
Which of the following might indicate to her that her results are valid?

three other classes performed the same experiment.

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.