question_answer1) The average distance of the Sun at aphelion is ________.
question_answer2) The days are shorter during the ________ season.
question_answer3) ________ caused the bulging of the earth at the equator and flattening at the poles.
question_answer4) The imaginary line which segregates the day from the night is known as __________.
question_answer5) The period of diffused light after sunset is known as _________ and before sunrise it is known as _________.
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