Examlex
Most adoptions today are "open adoptions"-that is, the adopted child is aware that the biological mother released him or her to the adoptive parents.
Carbon Dioxide
A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.
Red Blood Cells
Cells in the blood that transport oxygen throughout the body and give blood its red color.
Carbon Monoxide
A colorless, odorless, and tasteless gas that is toxic to humans and animals when encountered in concentrations above about 35 parts per million.
Hemoglobin
A protein in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.
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