A student dips a strip of metal into a liquid. Which is evidence that only a physical change has occurred? The metal gives off light. The metal changes color. The metal gives off heat. The metal bends more easily.

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explanation:

poof

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.

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