If a plate with oceanic lithosphere meets another plate, the dense oceanic lithosphere dives beneath the other plate and sinks into the mantle: this process is called subduction. The sinking oceanic lithosphere drags the rest of the tectonic plate: this is the main cause of plate motion.
You may notice a decrease in symptoms during the build-up phase, but it may take as long as 12 months on the maintenance dose to notice an improvement. If allergy shots are successful, maintenance treatment is generally continued for three to five years.
When you get allergy shots , your doctor injects small doses of substances that you are allergic to under your skin. This helps your body get used to the allergen, which can result in fewer or less severe symptoms. Your allergist will use an extract of grass, weed, or tree pollen; molds; for allergy shots.