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Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

Diamond will scratch quartz. true or false