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Biology, 17.09.2021 02:30 darwincortez659

Angelique wanted to find out what shampoo made her hair the shiniest. Everyday she washed her hair with different shampoos and then rated how shiny her hair was, on a scale from 1-10. She used Pantene, Herbal Essences, L’Oreal, and just water. Name 2 constants that Ang should have kept the same in this experiment. *

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