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Several internal reflections of the laser beam are clearly visible until the water flow becomes so slow that there is no internal reflection . Demography of vultures in south-eastern Kazakhstan : In South Asia , vulture populations have declined so sharply that there is the threat that 3 species will soon go extinct in the wild . In practice , though , implementation of the law is so lax that there are no standards for EIA proceedings at all , much less formal opportunities for public participation in those proceedings . Usually , the situation escalates until the problem becomes so large or so critical that there is no way to avoid it , and the steps to resolve it may be drastic . In some individuals , progressive liver disease is so slow that there is negligible risk of major symptoms before death from other causes . The student system is so new that there were more problems . Like a tablecloth shoved by a heavy platter , the crust folded and began thrusting up mountains so sharply that there is a drop of 40,000 feet from the western edge of the Andes to the Peru-Chile trench in the Pacific Ocean over a horizontal distance of only 200 miles .