Answer:
heart , liver , stomach and kidneys
Hi! <span>In the United States, the most common blood type is </span>O<span>, followed closely by type A. If you have type </span>O<span> blood, you can only get type </span>O<span> red blood cell transfusions. But you can give your red blood cells to people with type A, </span>B<span>, </span>AB<span>, or </span>O<span> blood, which is why you are sometimes called a universal donor!
I hope this helped please tell me if i didn't help! :D</span>
<span>Stomach. Stomach which connects oesophagus to small intestine is the main part of digestive system where digestion occurs. Protein is a necessary food content for the healthy being of body. From the food proteins are liberated and its chemical digestion starts in the stomach.</span>
<span>Charles Darwin theory is theory of biological </span>evolution, that explains how modern organisms evolved over long periods of time through descent from common ancestors. Evolution is the process of change over time and Darwin explains in his theory the changes in humans over time and <span>shows how the living world is constantly changing.</span> This is the reason why cientists refer to charles darwin’s ideas about evolution as the theory of evolution.