Multiple MatchingExercise 60 of 70

The Ganges, rising from the Gangotri glacier at an elevation of approximately four thousand metres in the Indian Himalayas and traversing some two thousand five hundred kilometres before debouching into the Bay of Bengal through the world's largest deltaic system, occupies a position in Hindu cosmology that…

• Which river's unimpeded natural flooding cycle historically replenished agricultural soils without any requirement for synthetic supplementation?
• Which river sustains ritual purification practices of such profound theological necessity to its adherents that they persist despite empirically documented levels of hazardous contamination?