interlocking calcium carbonate plates is the answer.
How does changing the type of exercise effect heart rate in bpm?
Or
How does changing the amount of reps of [insert exercise here] affect heart rate in bpm?
Proteins have structural roles throughout the body. Carbohydrates are the major energy source for cells in the body. I am unsure if lipids or nucleic acids apply.
Explanation:
Answer is chest
If Answer is wrong then I'm sorry!
I hope it's helpful!