[Free Registration/Login Required] An informational text about the problems pythons, a nonnative species, are causing in the Florida Everglades. A question sheet is available to help students build skills in reading comprehension.

Compare and contrast three very different ecosystems - the Sonoran Desert in Arizona, the Florida Everglades, and the Arctic Coastal Plain in Alaska. Learn what makes each of them unique, and about the adaptations plants and animals had...