Answer:
Axon
Explanation:
Axon, also called nerve fibre, portion of a nerve cell (neuron) that carries nerve impulses away from the cell body. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells.
(not sure if this helped but i tried)
It changes because it goes through phases of growth and changes size and it developed more.
Hope this helps.
Answer:
Lithosphere is the name of the solid part of Earth, including rock, minerals, and metals.