What would happen to the pond in the figure if the freshwater inflow stream and path to the ocean disappear?

If the freshwater inflow stream and path to the ocean disappear, the pond would likely become stagnant over time. Without the inflow of fresh water, the pond would experience increased salinity and potentially higher concentrations of pollutants, which could harm aquatic life. Additionally, evaporation would lead to a decrease in water levels, further stressing the ecosystem and possibly leading to the pond's eventual drying up.