They carry oxygen to your entire body, and carry carbon dioxide away from your body to be exhaled.
Natural selection is species survival and reproduction due to differences in some traits that give them an advantage over others
<span>Punnett square
Hope that helps you</span>
Answer:
The electrical impulse travels from the sinus node to the atrioventricular node (also called AV node). There, impulses are slowed down for a very short period, then continue down the conduction pathway via the bundle of His into the ventricles.
I’m pretty sure your answer is D! Hope this helps! :)
