Continental Platform 



The parts of the world comprising the lower areas of con- 

 tinents and the continental shelves (q. v.). 



Continental Shelf 



The shallow, gently sloping portion of the seabottom 

 bordering a continent, down to a depth of about 100 fathoms. 



Continental Slope 



The steeply sloping portion of the sea-bottom extending 

 seaward from the Continental shelf. 



Continuous Grazing 



The practice of grazing the vegetation of an area without 

 interruption throughout the season, cf. Deferred grazing, 

 Rotation grazing. 



Continuum (Vegetation and Animal Life) 



The occurrence of populations of organisms along a 

 gradient, forming a distribution pattern of intergrading pop- 

 ulations. 



Contour 



(1) An imaginary line on the surface of the land which 

 connects points of the same altitude. (2) A line on a map 

 to show the location of points of the same altitude. 



Contour Farming 



The performance of farming operations such as plow- 

 ing, seeding, and cultivating along contour lines. 



Contour Furrows 



Furrows located along contour lines on range or pasture 

 land to prevent or retard runoff and permit the infiltration 

 of water into the soil. 



Contour Interval 



The vertical distance between two contour lines. 



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