| Pangea |
a supercontinent that included all the landmasses of the earth |
| Parallel of Latitude |
east-west circle on the Earths surface |
| Peat |
partially decomposed, compacted accumulation of plant remains occurring in a bog environment |
| Perennials |
plants that live for more than one growing season |
| Perihelion |
point on the Earths orbit at which the Earth is nearest to the Sun |
| Physical Geography |
geography that deals with the natural processes occurring at the Earths surface |
| Place |
in geography, a location on the Earths surface, typically a settlement or small region with unique characteristics |
| Plateau |
upland surface, flat and horizontal, upheld by resistant beds of sedimentary rock or lava floss and bounded by a steep cliff |
| Playa |
flat land surface underlain by fine sediment deposited from shallow lake waters in a dry climate |
| Prairie |
dominant tall grasses, widespread in continental climate regions |
| Precipitation |
particles of liquid water or ice that fall from the atmosphere and may reach the ground |
| Prime Meridian |
reference meridian of zero longitude; universally accepted as the Greenwich meridian |
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