bio kidney............problemsssssssssssssssss

In the first case, the urine will be concentrated. This is because steak is rich in protein. In other words, it contains a lot of amino acids. As the urine concentration mainly depends on how much water you have drinked and how much amino acid you have taken. The amino acid will be broken down and undergo deamination. The nitrogen will become ammonia and go to the kidney for sexcreting. Therefore, the urine concentration is higher in the first case.
In the second case, as the refugee only takes bread and water. He takes little protein from bread. Therefore, no excess protein is left. There will be less amino acids undergo deamination in the liver. Less ammonia is produced, so the urine concentration is lower in this case.