(Solved): Please Select all that apply. Given the adaptations for osmoregulation in two species of sharks an ...

Please Select all that apply.

Given the adaptations for osmoregulation in two species of sharks and one species of stingray in saltwater, scientists hypothesized that these species of fish would not be able to adjust their osmoregulation in freshwater. The scientists measured the concentrations of $$\mathrm{Na},\mathrm{Cl}$$, and urea in all three species in both saltwater and freshwater. Their data are shown in the graph. The percentages do not sum to $$100\%$$ because other solutes are involved to a lesser degree in osmoregulation. Percent contribution to osmoregulation in salt water (SW) and in freshwater (FW) Which of these experimental designs could help determine if the change in osmoregulation when the sharks and stingrays are exposed to freshwater is fully reversible if the fish experience saltwater again? In this experiment, the $$\mathrm{Na},\mathrm{Cl}$$, and urea concentrations of two species of freshwater sharks and one species of freshwater stingray are measured in freshwater. The fish are moved to saltwater and then back to freshwater. Once the fish acclimate to each type of water, their solute concentrations are measured. In this experiment, a new sample of the shark and stingray species are selected and divided in half. The fish's $$\mathrm{Na},\mathrm{Cl}$$, and urea concentrations are measured in saltwater. One-half of the fish are moved to freshwater and the other half are moved to new saltwater tanks. Their solute concentrations are measured every two hours as they acclimate to the new tanks. In this experiment, the $$\mathrm{Na},\mathrm{Cl}$$, and urea concentrations of the shark and stingray species are measured in saltwater. The fish are moved to freshwater, then to a $$50\%$$ saltwater solution, and finally back to $$100\%$$ saltwater. After the fish acclimate to each new condition, their solute concentrations are measured. In this experiment, a sample of the shark and stingray species are moved to freshwater and then moved back to saltwater. The fish's $$\mathrm{Na},\mathrm{Cl}$$, and urea concentrations are measured initially in saltwater. Once the fish acclimate to each type of water, their solute concentrations are measured.