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Children first acquire skills for interacting with peers
Carbon Dioxide
An invisible, scentless gas formed from the combustion of carbon-based substances and breathing.
Oxygen
A colorless, odorless reactive gas, the life-supporting component of the air.
Erythropoiesis
The process by which red blood cells (erythrocytes) are produced, which occurs in the bone marrow.
Erythropoietin
A hormone produced primarily by the kidneys that stimulates the production of red blood cells in response to low oxygen levels in tissues.
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