13. Urinary catheterization is done for which of the following objectives?
LA. To facilitate ultrasound of the abdomen
B. To perform contrast radiographic Studies
C for ease of Kidney biopsy Collection
D. For the treatment of systematic antibiotics

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.

They formed the oceans.  as they melted water was formed and the water made the oceans