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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
broad group (taxon) in the biological classification system, which is then divided into kingdoms...
the hormone produced by the beta cells of the Islets of Langerhans in the pancreas, which...
chisel-shaped teeth found at the front of the mammalian jaw, used to bite and cut off pieces of...
the osmotic pressure that develops within the cells of a root system that causes the sap to rise...
modified phloem parenchyma cells that help translocate food substances in the plant.