Answer:
Measure your heart rate while lying down, while sitting down, and while standing. How does your heart rate change with body position?
I believe the correct answer is mantle. Let's hope this is right!
Answer:
c) The species underwent punctuated equilibrium
e) The species’ environment underwent a dramatic change for which it was poorly suited
Explanation:
Answer:
secondary structure ... hydrogen bonds...
Explanation: Some regions of a polypeptide may coil or fold back on themselves. This is called secondary structure, and the coils or folds are held in place by hydrogen bonds.