Answer:
"Desert Holiday" and "The Mysterious Olm" both explore the idea that life forms vary in different environments, but they do so in different ways.
In "Desert Holiday," the idea of life forms adapting to different environments is presented through the description of the various plant and animal species that are found in the desert. The passage mentions "cactus and mesquite trees" that have "developed special adaptations to conserve water," as well as "lizards and snakes" that are able to "withstand extreme temperatures." These examples demonstrate how different life forms are able to thrive in the harsh desert environment by adapting and developing specific characteristics that allow them to survive and flourish.
In contrast, "The Mysterious Olm" presents the idea of life forms varying in different environments through the description of a unique species of aquatic salamander called the olm. The passage mentions that the olm is found only in the caves of Slovenia and Croatia, and that it has "evolved to be adapted to life in the underground environment." This example shows how the olm has adapted to its unique habitat and how it is distinct from other life forms that are found in different environments.
Overall, both "Desert Holiday" and "The Mysterious Olm" illustrate the concept that life forms vary in different environments by describing the adaptations and characteristics that allow different species to thrive in their respective habitats.