A fish is removed from a contaminated lake. You determine that a particular toxin (X) is present
in its cells at a concentration of 1500 µg/L (assume it is water soluble and permeable through biologic membranes). You place the fish in a tank full of clean water (X = 0 µg/L), and measure the toxin concentration in the fish cells over the next 10 days. On the graphs below predict how the toxin concentrations in the fish and the water will change.