This is a river that runs wholly or partly beneath the ground surface one where the riverbed does not represent the surface of the Earth (rivers flowing in canyons are not classed ...
A naturally-occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of fluids such as wind, water, or ice, ...
A large persistent body of ice. Originating on land, a glacier flows slowly due to stresses induced by its weight.
A glacier forms in a location where the accumulation of snow ...
A low-relief plain representing the final stage of fluvial erosion during times of extended tectonic stability. The existence of peneplains, and peneplanation as a ...
A wide variety of river and stream exist in limnology. All these can be divided into two groups by using the water-flow gradient as either low gradient channels for streams or ...
A body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, ...
Annual or biennial plant (Raphanus sativus) of the mustard family, probably of Oriental origin, grown for its large, succulent root. Low in calories ...
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