After the tsunami moves into the coast, and then to the regression of the waves into the Sea (Backwash) by the regression of each wave will remove their debris debris houses reduced to sea-based accommodation, etc., in addition to the tsunami waves, such as powerful. So when I moved into the coastal and land and will cause coastal erosion and ground happened as wide area by land and coastal sediments in front of these sediments due to drag, pull back the tides flowing back on the underwater area. That sediment on the ground and coastal sediments, most of these are the various types of chemical contamination arising from human activity come. And some of it comes from nature itself. Therefore, the tsunami has occurred each time so as to bring the contaminants. Chemicals into the sea, the contamination of chemicals that came with the sludge into the ocean affects humans, has as a result because when sea creatures receive these contaminants into the body to convey these contaminants through the food chain. When humans eat these sea creatures to humans, it will pick up contaminants into the body.
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