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(also called the carina) in birds is an extension of the sternum (breastbone) which runs along the midline of the sternum and extends outwards, perpendicular to the ribs.
vascular tissue that conducts food substances from the leaves to other parts of the plant. The...
(also called radioactive dating) a method of measuring the age of fossils based on how much...
a physical and psychological dependence on alcohol, which affects every aspect of a person's...
a blood vessel that carries blood away from the glomerulus and branches to form a capillary...