Justin designed an experiment to find out how running up bleachers affects his heart rate. First he records his resting heart ra

Question

3 years ago

9

Justin designed an experiment to find out how running up bleachers affects his heart rate. First he records his resting heart ra

te and then runs up the bleachers 10 times. Each time he reaches the top, he records his heartrate then rests 20 minutes. Which is involved in Justin's experiment?

Physics

2 answers:

pychu [463] · Answer 1 · 2022-07-24T21:11:37+03:00

pychu [463]3 years ago

7 0

Answer:

it is b

Explanation:

vazorg [7] · Answer 2 · 2022-07-24T19:54:44+03:00

vazorg [7]3 years ago

3 0

Answer:neither repetition no replication

Explanation: