Answer: Firstly, we should begin to know what leveling off is.
Leveling off- to stay the same after a period of increase
Nearing the end of the graph you can see there is no continuous increase for the rotifers. That can be explained by carrying capacity. The flask has limited space.
The midrib (the lines in the leaf) is more dispersed in the aspen leaf compared to the more heavily structured redbud leaf. The Redbud has a heart shape while the aspen leaf has a tear drop shape.