Desert ecosystems are characterized by low rainfall, extreme temperatures, and sparse vegetation. These environments can be hot, like the Sahara Desert, or cold, like the Antarctic Desert. Plants and animals in deserts have adapted to survive with limited water, often developing features like deep roots or water-storing tissues. Common desert animals include lizards, snakes, and rodents, which are often nocturnal to avoid daytime heat. Many desert plants, such as cacti and succulents, have thick skins or spines to reduce water loss. Despite their harsh conditions, deserts are home to a unique array of life that has evolved to thrive in these challenging habitats.