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(also called radioactive dating) a method of measuring the age of fossils based on how much radioactive decay has taken place in the radioactive elements or isotopes that occur naturally in fossils
the structural and functional unit of the kidney, which filters the blood and produces urine....
neurons that transmit nerve impulses away from the central nervous system to the effectors.
two bean-shaped guard cells surrounding a pore in the epidermis of a leaf that allow gases to...
the ability of a liquid to spontaneously rise up a narrow space, such as that found in xylem...