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Answer:
When you are exercising, your muscles need extra oxygen some three times as much as resting muscles.
This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing
Cancer cells the branch of medicine concerned with the studying and treatment of tumor.
Like Eukaryotic? Eukaryotic cells have nucleus and organelles.
Positive life desisions are usually based on good mental and emotional health.
