February 19, 2017

Homework Help: Science: heart beats.

Posted by LiEN on Saturday, April 26, 2008 at 6:55am.

I was wondering if anybody could help me with my science assignment.I was required to write out a method for a controlled experiment testing my hypothesis: "Physical activity affects heart rate" and I've no idea what my method is to test out this experiment.
Please help &thankyou~

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