Blood in the pulmonary vein is oxygen rich, while in all of the other veins, it is oxygen poor.
Hope this helps... mark as Brainliest plz
<span>Epiglottis? I think that's how you spell it. So sorry for the late answer. I would appreciate a brainliest though! </span>
Answer:
Frequency: refers to how often you exercise.
Intensity: refers to the intensity of exercise undertaken.
Time: refers to the time you spend exercising
Explanation:
give credit to the other person :)
