I NEED HELP PLEASE IT'S DUE TOMORROW PLEASE

5. heart rate

6. caffeine

7. mice

8. c

9.b

10. (not sure sorry)

Explanation:

5 is heart rate because how high/low it is depends on the amount of caffeine they have. Ex- if they have a lot of caffeine the heart rate would be higher like in humans.

6 is caffeine because the heart rate depends on the amount of caffeine given.

7 is the mice because thats the one thing not changing or dependent on anything since we can see mice without caffeine and mice with caffeine

8. is c because Ari wants to see if the heart beat is dependent on caffeine

9 is b cause theres a group of mice without caffeine

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