Gggggggggggggghh by Ed for G
The correct answer should be
<span>D. Autonomic nervous system
It is called autonomic because it works on its own and it regulates organs functioning which is a thing that happens involuntarily. It regulates heart beats for example and it's not something that you do voluntarily since the heart beats regardless of you. It also controls things like vomiting or sneezing that you can't choose not to do when it starts happening.</span>
Typical methods of classroom scientific communication include t<span>ypical methods of classroom scientific communication.</span>
Answer:
C. Oxygen concentration decreases as altitude increases
Explanation:
Higher altitudes have lower levels of oxygen and decreased air pressure.
To survive natural selection, one must be fit and be able to adapt to the environment and situations, thus why it's called survival of the fittest.
