Question

Define circle of illumination

Answer 1

Answer:

Circle of illumination is an imaginary line that separates light from darkness and day from night. Earth's axis refers to an imaginary line going through the center of the earth from top to bottom

Explanation:

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Answer 2

Answer:

While rotating a part of earth facing the sun has day and other part night. Circle of illumination is the imaginary line which shows clear demarcation between the phenomena of day and night on earth.

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