Bulging and slipped discs, as well as extruded discs, can occur in any of the three main regions of the spine. In other words, these injuries occur in the neck, upper or mid-back and in the low back. They don't affect the sacral or coccyx regions because there are no intervertebral discs there.
The smallest planet in our Solar System, Mercury only has a diameter of 4,878 km. As a comparison, Mercury is not much larger than our Moon, which has a diameter of 3,473 km. One reason why Venus is nicknamed Earthâs twin is because it is almost the same size as our own planet.s a comparison, Mercury is not much larger than our Moon, which has a diameter of 3,473 km. One reason why Venus is nicknamed Earthâs twin is because it is almost the same size as our own planet.
Small amounts of mercury spillage can be cleaned up by addition of sulphur powder. The resulting mixture should be disposed of carefully. Name: mercury. Symbol: Hg. Atomic number: 80. Relative atomic mass (Ar): 200.59 (2) Standard state: liquid at 298 K (the heaviest known elemental liquid) Colour: silvery white.