Question

what is the chief function of red blood cells

Answer 1

to transport oxygen........................

Answer 2

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$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \texttt{Red blood cells (RBCs), also known as} \\ \texttt{ Erythrocyte are a type of blood cell which } \\ \texttt{are made in the bone marrow. These cells contain } \\ \texttt{the protein that is called Hemoglobin. Hemoglobin } \\ \texttt{carries oxygen to the body parts from the lungs. } \\ \texttt{Red blood cells also remove carbon dioxide from } \\ \texttt{the body by transporting it to the lungs.}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \texttt{The red blood cell lives an average of } \\ \texttt{100-120 days in human-body. In the adult} \\ \texttt{human-body, there are some 5.2 million red } \\ \texttt{blood cells per cubic millimetre of blood.}$