The anoxic layer also contains high concentrations of ammonia and phosphate which are almost completely absent from the upper layer.
These ions are almost completely absent from the upper layer. The anoxic layer also contains high concentrations of ammonia and phosphate.
The anoxic layer also contains high concentrations of ammonia and phosphate. These ions are almost completely absent from the upper layer.
The anoxic layer also contains high concentrations of ammonia and phosphate. These ions are almost completely absent from the upper layer.