A landform is simply any natural geographic feature that can be found on the earth’s surface, such as valleys, hills, mountains and plateaux. Landforms are all not the same. Some may be very high above sea level and other parts may be deep below sea level. Some of them are made of very hard material and other parts may be made of very soft material. Some landforms are covered by vegetation whiles some are void of any plant at all. Some are very large and others are small. Most important of all, landforms are constantly changing because the factors that form them are in action everyday! - landforms
A relief map is a 2 or 3 dimensional map that shows varying elevations. On 2 dimensional versions shading is done using different colors are used to show varying degrees of elevation for things like mountain ranges. The 3 dimensional maps are the most impressive. Combined with the color a variety of different materials –plastic, rubber etc. –are used to display different features like valleys, mountains, rivers. The result is a map on which you can actually see and touch the top of Everest and the floor of Death Valley. - relief map
<span>A diagnostic test in which contrast material is inserted into the bladder through a catheter and x-rays taken as the patient urinates is abbreviated: is called retrograde cystography.
Retrograde means backward and cystography mean to visualize urinary bladder. This examination is used to visualize bladder when there is some obstruction in the urethra. Since a catheter can't be put on through there so it's inserted to bladder directly.
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