Quad-level occurrenceThe recorded occurrence of a species in the area represented by a specific, named U.S. Geological Survey 7.5-minute topographic quadrangle map (quad map).
Qualifying FacilityA category of electric power producer established under the Public Utility Regulatory Policy Act (PURPA) of 1978, that includes small-power producers…
Quality of LifeThe overall enjoyment of life. Many clinical trials assess the effects of cancer and its treatment on the quality of life.
QuartziteA hard, metamorphic rock that was originally sandstone.
QuaternaryThe present period, forming the latter part of the Cenozoic Era, originating about 1 million years ago and including the Recent and Pleistocene epochs.