Describe How Eratosthenes First Measured the Size of Earth Over

question 25

Essay

Describe how Eratosthenes first measured the size of Earth over 2,000 years ago.

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Definitions:

Motor Neuron

Neuron that innervates skeletal, smooth, or cardiac muscle fibers.

Vagus Nerve

The tenth cranial nerve, which innervates the heart, lungs, and digestive tract, thereby playing a significant role in controlling heart rate, gastrointestinal motility, and respiratory rate.

Parasympathetic Impulses

Nerve signals transmitted through the parasympathetic branch of the autonomic nervous system, generally working to conserve energy and restore the body to a state of calm.

Thoracic

Pertaining to the chest region, encompassing the area between the neck and abdomen and containing organs such as the heart and lungs.