Alternation of generations is a phenomenon of the succession of two or more generations in the life cycle of an organism, where there is a generation that reproduces sexually with one generation or more...
Blood is the principal medium in the transport process, Its colour is a red viscous liquid, PH equals 7.4 (weak alkaline), and Volume is 5 – 6 liters of blood on average, The structure...
Matter can be found in nature in one of three states which are solid , liquid , gas , Solid materials ( like wood and glass ) have a definite shape and volume ,...
Risks of blood transfusion When the transfused blood to a person is incompatible with his blood group , Some symptoms appear on him, Such as Shiver, Headache, Chest pains, Breathlessness, Blueness, Tachycardia, Hypotension and...
