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When gold dissolves in aqua regia, into what form is the gold converted?
Vitamin D
A fat-soluble vitamin essential for bone health, immune function, and overall well-being, often synthesized through sunlight exposure.
Naturally Occurring
A term describing substances, elements, or phenomena that exist in nature without human intervention.
Pigmented Skin
Skin that contains melanin, a natural substance providing color and protection against harmful UV radiation.
Human Ancestry
The lineage or genetic heritage of an individual or group tracing back through generations of human evolution.
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