Chemistry
The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:

Phenyl alanine
Hydroxy phenyl alanine
Amino phenyl alanine
Dihydroxy phenyl alanine

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Chemistry
Table salt gets moist during rainy season because

Sodium chloride contains hygroscopic impurities like magnesium chloride
Sodium chloride is hygroscopic
Sodium chloride contains some quantity of sodium iodide
Sodium chloride is deliquescent

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