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Alex
3 years ago
10

​When you look at the cord coming out of the lamp on your desk, you will notice that there is a protective coating that surround

s and encapsulates the electricity-conducting wire inside. If you were to relate that model to the human neuron, the protective coating would refer to the _____________.
Social Studies
1 answer:
azamat3 years ago
3 0

Answer:

Myelin

Explanation:

Myelin is a fatty substance that surrounds nerve cell axons to insulate them and increase the rate at which information is passed along. The myelin can be compared to the protective coating of an electrical wire.

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Complete Question:

Dr. Alley once helped a Grand Canyon ranger answer a tourist’s question: "Why is the Canyon wider at the top than at the bottom?" The tourist had their own favorite theory. Based on the materials that have been presented to you’ve in this class, what geologically accepted answer would Dr. Alley and the ranger have given the tourist?

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B) The canyon is really the same width at the top as at the bottom, but the well-known "optical illusion" of distant things appearing smaller causes it to look as if the canyon is narrowing downward.

C) The bulldozer that made the canyon was wearing out its blade as it dug down.

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E) The river used to be much wider before the desert formed, and so cut a wide canyon, but the river has narrowed as the drying occurred, and now cuts only a narrow canyon

According to Wikipedia, Grand Canyon is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,093 feet or 1,857 meters).

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