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Why is breathing called an Involuntary action?
What is produced when human cells respire anaerobically?
Differentiate between aerobic and anaerobic respiration?
Explain respiration in birds?
How does gaseous exchange take place in earthworms?
Why do we yawn?
Differentiate between Pulmonary respiration and cutaneous respiration?
How are dust particles prevented from entering the lungs?
What causes muscular cramps in a person?
Can you guess what would happen if a potted plant having underground roots is overwatered?
How is carbon dioxide removed from the human body?
Why do mountaineers carry oxygen cylinders with them?
What is the difference between external respiration, internal respiration and cellular respiration?
Explain the role of hemoglobin in cellular respiration?
Explain how respiration takes place in a cockroach?
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