Answer: Cells
Explanation:
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.
Natural system is former when various components get grouped together for a particular function
Multipolar neurons<span>. This is the </span>most common type of neuron<span>, with one axon and many dendrites.</span>
The earth rotates on its axis