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Geography
The study of physical characteristics of earth and the distribution and effects of life on earth, especially that of humans.
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Geography > Physical geography 
pesticide
Geography; Physical geography
Any chemical sprayed on crops to prevent disease or to kill pests which attack the plants. In modern times, concerns have been raised as to their safety as studies have not had ...
psammosere
Geography; Physical geography
Succession of plants in a sandy environment such as coastal dunes.
physical weathering
Geography; Physical geography
(also mechanical weathering) a process of weathering which results in smaller pieces of the same rock material being produced.
plankton
Geography; Physical geography
Any drifting biota inhabiting the pelagic (non-bottom) zones of seas and lakes. Important food source for marine organisms.
earthquake
Geography; Physical geography
Sudden release of energy through the earth’s crust in the form of seismic waves. Tension builds up within the crust as convectional forces in the mantle try to move the plates ...
overland flow
Geography; Physical geography
Water running over the surface of the land into a river channel or body of water. May occur due to: impermeable rock surfaces, saturated soils, rainfall intensity exceeding ...
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