Nineteenth- Century Scientists Thought the "Ether" to Be

question 71

Multiple Choice

Nineteenth- century scientists thought the "ether" to be

• A) the medium for the propagation of sound waves.
• B) the cause of the gravitational force.
• C) the medium for the propagation of light waves.
• D) All of the above.
• E) None of the above.

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Definitions:

Neurologic System

Refers to the nervous system of the body, including the brain, spinal cord, and all nerves, responsible for controlling bodily functions.

Endocrine System

A network of glands in the body that secrete hormones directly into the circulatory system to regulate metabolism, growth, and development.

Immune System

The body's defense against infectious organisms and other invaders.

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the rest of the body and returns carbon dioxide from the tissues back to the lungs.