A student researching bears found the chart below in a textbook. The chart shows the evolution of the different bear species. Which of the following conclusions is best
supported by the data given in this chart?

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.