Observe: Watch the beating heart and count the number of beats in 10 sec
and record. Then mult...
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Biology, 24.05.2020 01:06, coreyslotte
Observe: Watch the beating heart and count the number of beats in 10 sec
and record. Then multiply by 6 to determine the beats per minute (bpm).
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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