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According to the Brønsted-Lowry definition, an acid is
Waterproofing
The process of making an object or structure resistant to water penetration.
Mucus
A sticky, thick fluid secreted by mucous membranes and glands, providing lubrication and protection in various parts of the body.
Gas Exchange
The biological process through which organisms exchange oxygen and carbon dioxide with their environment, essential for respiration.
Skin Burn
An injury to the skin caused by exposure to heat, chemicals, electricity, or radiation, which can vary in severity from mild to life-threatening.
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