The answer is B
explanation: ..
Answer:
Changes in climate, pollution (to air/water/soil), health issues (mental/physical), harm to animals/nature, etc.
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During inhalation, the lungs expand with air and oxygen diffuses across the lung's surface all of this will enter the blood stream and exhaling isbreathing it all back out
Answer:
lungs
Explanation:
goes from the heart to the lungs to get oxygen