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Respiration

The process by which your cells use oxygen to release energy. The waste product is carbon dioxide.

Human Body - Glossary

More Facts

Cells
The tiny units which make up all the parts of your body.

Epidermis
The upper layer of your skin, above the dermis.

Melanin
Dark pigment which gives hair, skin and eyes some of their colour.

Ventricles
The two lower chambers of your heart.

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