B.
Perspiration, or sweating, is the greatest source of fluid loss from the body.
Answer:
b outer ear
Explanation:
The auricle (pinna) is the visible portion of the outer ear. It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane.
Every seventh time a rat presses a lever, it receives food pallets.
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