Steroids and other medications. Long-term use of oral or injected corticosteroid medications, such as prednisone and cortisone, interferes with the bone-rebuilding process. Osteoporosis has also been associated with medications used to combat or prevent: Seizures; Gastric reflux; Cancer; Transplant rejection; Medical conditions
The main functions of using a compass are: 1  tell which direction you are traveling - your heading. 2  tell which direction an object is from you - its bearing. 3  keep you following a straight line of travel. 4  orient a map - aligning a map with the actual land.  triangulation - determining your location with a map.
For this article, weâre using a compass that has all of the features you need for basic navigation: Baseplate: Clear, so you can see the map below it, it has at least one straight edge for taking bearings and transferring them to your map. Ruler(s): Used with your mapâs scale to determine distances.