The answer is mass and volume
In exponential growth, the growth rate of population per capita remains the same in spite of the size of the population, thus, resulting in the population to grow faster and faster as it gets bigger. However, in nature, the populations may grow exponentially for certain time duration, and they eventually get restricted due to limited availability of resources.
In the graph, it is evident that from 1950 to 1990 there is exponential growth, signifying that the fish exhibited almost optimal conditions of living. However, in 1990 the population started to decline steadily, demonstrating an extreme lack of resources or enhancement in predatory species.
The water cycle in Disneyland starts by the water forming in the pipes through the hole of the lake. The pipes then connect to all of the water sources, after the water has been let out, the water will evaporate and go back into the lake again bc of condensation