Answer:
<em>its the last one </em>
Explanation:
cause its the outer layer of the skin
I could be wrong here but I think factories and animals are 2 ways carbon gets into the air because animals breath out carbon, while factories pollute the air with carbon. If anything I would think plants are responsible for removing it because they give out oxygen.
<h3>Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells.</h3>
A fir person can recover faster than an unfit person because his body is better suited against injuries.
Becasue of seismagraghs they let us know when energy is changing
