The document describes four main ecosystems: deserts, Mediterranean forests, jungles, and poles. It provides characteristics of each ecosystem and examples of plants and animals that live there. The desert is hot during the day and cold at night with little rain. Common desert animals include cacti, camels, snakes, scorpions, and lizards. The Mediterranean forest has moderate temperatures and little rain in the summer. Plants such as oak trees, pines, and rosemary are found there along with bears and wild boars. Jungles are warm with heavy rainfall and diverse flora and fauna like parrots, pumas, and monkeys. The poles are very cold with snow, and polar bears, penguins