3. what happens to air as it passes through the respiratory system?
a air is trapped, filtered, and dried.
o
b
air is cooled, filtered, and dried.
oc air is trapped, cooled, and moistened.
od air is filtered, warmed, and moistened.

Her parents start noticing changes about her. she's probably just competive though not on drugs

By placing 2 fingers at the sternum (the spot where the lower ribs meet) the put the heel of your other hand next to your fingers. hope this

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b