If a scientist finds that there is a correlation between the independent and dependent variables, then the relationship is considered

the answer is 1. photosynthesis. glad to

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

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.

i got you i did it ya know what it is just needing to fill this in for a quick task!