Populations of bull sharks are also found in several major rivers, with more than 500 bull sharks thought to be living in the Brisbane River. One was reportedly seen swimming the flooded streets of Brisbane, Queensland, Australia, during the 2010-11 Queensland floods.
exists and is an alternate of . Making the world better, one answer at a time. You could put it through a fine strainer or a piece of mesh so that the sand will fall through and the gravel will stay on top. You could put it through a fine strainer or a piece of mesh so that the sand will fall through and the gravel will stay on top.
The main methods available are: 1  precipitation (e.g. treatment with a solution of aluminium or ferrous salt to precipitate phosphates); 2  removal of nutrient-enriched sediments, for example by mud pumping; and. 3  removal of biomass (e.g. harvesting of common reed) and using it for thatching or fuel.