The correct answer is ATP
This stands for Adenosine Triphosphate which is the main source of all energy in the body. It is used in all types of active energy usage and is produced with processes such as the krebs cycle.
Asexual reproduction the the act of an organism producing offspring by themselves, without the assistance of another organism. Asexual reproduction has many different advantages, but the primary one would be that reproduction can occur with a single parent as opposed to two.
The up and down arrows you carved into the spinal cord are meant to represent the movement of different nerve signals. These signals, which are slso called action potential, are coordinated movements of sodium and potassium ions that are psocessed across the nerve cell membranes
