The lungs expand and with that you breathe in air as the diaphram contracts and relaxs to cause "breathing"
I believe the answer is D) reactivity. Hope this helps. (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
<span>b.) organism and health</span>
it would be (D) because you cant see an atom without a microscope and a model is a larger model of the actual thing.
To avoid just don’t make too many food and make how much you can eat
