New types of bacteria being created!
Deadly particles like SO2 that comes into contact with the air will form air pollution. This deadly particles will then form acid rain. When those rain comes into contact with water supply, they turn the water acidic. They will cause river to be too acidic for fishes and other living organisms to survive.
The right answer is E. Sodium (with 140mmol/L)
Sodium is the most important element in the blood and extracellular liquids of the body.The needs of an adult subject are of the order of 1 to 2 g of sodium per day. The normal diet is much richer than our actual needs, about 4g, so it can largely compensate for the needs of an athlete or a runner.
Losses are majoritarly by feces and sweat. The kidney is able to reabsorb almost all the sodium that is filtered: urinary losses can be tiny.