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 specia

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 population of gray tree frogs will likely decrease .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 prezygotic isolation

Explanation:

The terrain is changing to a point in which it would be unsuitable for grey tree frogs and highly suitable for green tree frogs.

Prezygotic isolation prevents the fertilization of eggs. If the two frogs have different mating calls then they won't mate with eachother.

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