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I rly need help with these three questions
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I rly need help with these three questions

I rly need help with these three questions-example-1
User Vitalii Elenhaupt
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6). the presence of caffeine on the worm's skin

7). the worm's heart-rate

8). "Dripping caffeine on a worm's skin causes the worm's heart to beat faster."

(Note: The things she observed suggest but do not PROVE that this hypothesis is true.)

User Hackattack
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