What Is the Cause for the Slow Movement of Reference

question 54

Multiple Choice

What is the cause for the slow movement of reference marks, such as the celestial poles and equator, to move across the sky?

• A) precession
• B) evolution
• C) climate change
• D) continental drift
• E) angular revolution

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Definitions:

Oligodendroglia

Glial cells in the CNS that myelinate axons.

Myelin

A fatty substance that surrounds the axon of some nerve cells, forming an insulating layer that is essential for the proper functioning of the nervous system, speeding up the transmission of nerve impulses.

Saltatory Conduction

A process whereby nerve impulses jump between gaps in the myelin sheath of neurons, speeding up signal transmission.

Nodes

Points of intersection or branching in a network or circuit, often used in the context of biological and technological systems.