Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate.
Answer:
C- DNA
Explanation:
DNA is responsible for protein synthesis.
The only one that makes sense is size. because there could be other minerals the same size. so size wouldn't be a property to help identify
It changes because the age increases
Answer:
The answer is Angiosperms and gymnosperms
