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The mark-recapture technique is often used to estimate population size.
Primary production increases with an increase in total phosphorus concentration.
Scale used to measure pupil size in millimeters.
Scaling the Earth down to the size of a basketball, the Moon is roughly the size of a tennis ball. T
Lobes of the brain, with primary receiving and integrating centers of the human cerebral cortex.
Comparing the structure of a primary shoot from (A) a monocot and (b) a eudicot.