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How are fossils older than 60,000 years dated?
Ophthalmoscope
An instrument used by doctors to examine the interior of the eye, including the retina and optic nerve.
Stethoscope
A medical instrument used for listening to the sounds generated within the body, particularly the heart and lungs.
Hyperventilating
Breathing at an abnormally rapid rate, which can lead to decreased carbon dioxide levels in the blood, sometimes causing lightheadedness or fainting.
Supine Position
A body position where someone lies flat on their back facing upwards.
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