Sciencespeaking topic
Vitamin D isn't really a vitamin, it's a hormone precursor: it's made in your skin by sunlight and is independent of food. Why was it mislabeled a 'vitamin' in the first place?
— vitamin D hormone classification
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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