Apopulation of lizards lives in an isolated area where local rocks contain a high concentration of radioactive elements. a study of this population would most likely show

 B)  a higher than average mutation rate.

Radioactivity increases the rate and number of mutations in creatures that are exposed to it. When creatures are exposed to a higher than normal dose of radiation, they will show a higher than average mutation rate. The exact effect of these additional mutations cannot be predicted.

~Gotten from USATestprep~

the answer is trees if i'm not mistaken

uh two lol