This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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D
The human skin produces Vitamin D when exposed to direct sunlight. Ultraviolet B (UVB) rays from the sun trigger the synthesis of Vitamin D in the skin.
The correct answer is D. D. Vitamin D
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The human skin produces Vitamin D when exposed to direct sunlight. Ultraviolet B (UVB) rays from the sun trigger the synthesis of Vitamin D in the skin.
This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.