Answer: they allow air to enter lungs and also permits air into the body
Explanation:
I believe the answer is C
2 NADH molecules are gained.
Fertility is the measure of the ability to become a parent.
<h3>FERTILITY:</h3>
Fertility is a phenomenon that describes the ability to reproduce or produce offsprings.
Reproduction is one of the characteristics of living things and the ability to successfully execute this characteristics is termed fertility.
The opposite of fertility is sterility, which means the inability to produce offspring or reproduce.
Learn more about fertility at: brainly.com/question/3204813
Dissolved gasses under lots of pressure are being trapped in the magma, these expanding gases and steam are what causes it. Also, because of this heat getting more and more hotter, and the volume being lost due to the gasses over time the lava bursts out.