Contemporary researchers have integrated the behavioral and cognitive perspectives into the more comprehensive cognitive-behavioral model, arguing that conditioning leads to the development of a disorder and that environmental stimuli drive or maintain it.

Darwin’s hypothesis about how life changes over time is now called?

Has magnification ability of hundreds of thousands of times

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 .