A researcher performed an analysis of the elemental composition of several fish species living in the same body of water. The amount (in parts per million) of iron (Fe), calcium (Ca), potassium (K), sodium (Na), and magnesium (Mg) found in each species is shown in the table. Species Fe Ca K Na Mg Species A 55.70 179.51 107.94 45.39 33.89
Species B 23.74 134.16 105.19 45.10 33.38
Species C 67.18 785.18 103.60 42.71 32.45
Species D 30.09 457.59 107.97 44.68 33.84
Based on this data, identify which elements are found in similar concentrations across all species of fish tested. Explain how this data provides support for the hypothesis that all four species of fish descended from a common ancestor.

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.