Arteries<span> have thick, elastic, muscular walls whereas </span>veins<span> have thin walls with few elastic fibers</span>
<span>Cardiopulmonary resuscitation is a first aid technique for individuals in cardiac arrest that involves rescue breathing and a defibrillator. The aim of this technique is to ensure the brain remains operational and keeps blood pumping around the body, until further medical help can arrive.</span>
Bro... my brain hurt from reading thag
muscles are contractile tissue and burn the unwanted calories than fat does
hope you are satisfied with my answer
I think it should be B because to improve your'e physical fitness you have to do regular excercise
