Health, 26.03.2020 04:14, lunarwoo

Different parts of living things work together during respiration. Oxygen enters the nose and follows the path to your lungs. Cilia help keep the oxygen that moves into your lungs clean. Next alveoli allow oxygen from the air to pass into your blood. All of these parts working together create a very important process for humans. What is this process called?

A) digestion
B) evolution
C) reproduction
D) respiration

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Different parts of living things work together during respiration. Oxygen enters the nose and follow...