Question

what is blood??science languge​

Answer 1

The blood cells are mainly

red blood cells (also called RBCs or erythrocytes),

red blood cells (also called RBCs or erythrocytes), white blood cells (also called WBCs or leukocytes)

red blood cells (also called RBCs or erythrocytes), white blood cells (also called WBCs or leukocytes) and platelets (also called thrombocytes).

The most abundant cells in vertebrate blood are red blood cells.

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Answer 2

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Blood, fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products. Technically, blood is a transport liquid pumped by the heart (or an equivalent structure) to all parts of the body, after which it is returned to the heart to repeat the process. Blood is both a tissue and a fluid. It is a tissue because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma), which makes the blood a fluid. If blood flow ceases, death will occur within minutes because of the effects of an unfavourable environment on highly susceptible cells.