- Life Sciences
(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 region of the kidney where the renal artery enters, and where the renal vein and the ureter...
the small amount of air that always remains in the lungs during breathing.
nutrients are obtained by digesting organic compounds that have to be acquired and ingested by...