1 Why the test is used: Between 75% and 90% of people with lupus have a positive anti-dsDNA test. 2  Also, the test is very specific for lupus. 3  Therefore, a positive test can be useful in confirming a diagnosis. 4  For many people, the titer, or level, of the antibodies rises as the disease becomes more active.
The zone below ground where the pore spaces are filled with ground water is called the saturated zone. Above the saturated zone, where the pore spaces are not filled with ground water, is the unsaturated zone. The water table marks the boundary between the saturated and unsaturated zone. The water table intersects Earth's surface at rivers and at lakes.
About 70% of the Earth is covered with water. The salt in that water would build a 180 mile high, 1 mile thick wall around the equator according to the Windows to the Universe website. There are other salts dissolved in sea water, with ordinary sodium chloride constituting about 90% of the dissolved salt. The table at left is given by the Windows on the Universe website. It is not clear how you reach charge neutrality with these numbers.