Question

what is red blood cells​

Answer 1

Answer:

Red blood cells are an important element of blood. Their job is to transport oxygen to the body's tissues in exchange for carbon dioxide, which is carried to and eliminated by the lungs. Red blood cells are formed in the red bone marrow of bones.

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Answer 2

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

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