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BLOOD TYPES 🩸! why do we have different blood types?
There are four main blood types, which are determined by the presence or absence of specific antigens on the surface of red blood cells. Antigens are substances that can trigger an immune response, and in the case of blood types, they determine whether or not a person's immune system will accept or reject a particular type of blood. The four ...
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For 450 years, the world's most-used map has made Africa look smaller than it really is. The United Nations just voted to change that. Al Jazeera’s Basel Ghazoghli breaks it down and goes back 450 years to show how the map was made — and why it stuck. #news
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For 450 years, the world's most-used map has made Africa look smaller than it really is. The United Nations just voted to change that. Al Jazeera’s Basel Ghazoghli breaks it down and goes back 450 years to show how the map was made — and why it stuck. #news
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