Which of the following are functions of the upper respiratory system?
O moving air down to the larynx
O removing impurities from the air in the airway
O producing carbon dioxide
O diffusing oxygen from the air

answer; i do believe the correct answer is (25) times faster;

i would suggest the best recommendation want to get out of the vehicle and look around to make sure their isn't anyone near or behind the vehicle.

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the second awnser

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because it is for complex problems

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i dont know