The skier would have both potential and kinetic energy. There is kinetic energy because the skier is moving, and potential energy because the skier is on a hill.
The person ur looking for is erwin charged
Im no science teacher but I think it is the globular proteins
In the _PNS_, the cells responsible for insulating neurons with myelin are called _Schwann cells_, whereas in the _CNS_, the cells responsible for insulating neurons are called _Oligodendrocytes_.
Plants take in Carbon (Co2) in order to produce Oxygen for us to breathe and live.
This is why fertilizers do not need or use Carbon.
I hope this helps you a lot.