catalase experiment

food rate of fizzing (1-10)
boiled potato 0
raw potato 4
cooked liver 1
raw liver 10

the table above shows the results of an experiment done by juan and cindy. juan and cindy placed hydrogen peroxide on several food samples and recorded the relative amount of fizz that each produced. the fizz was produced by oxygen bubbles released by the action of the enzyme catalase, which is found in almost every living cell. which of these is a valid conclusion from their data?

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .