Desert regions are characterized by their dry climate, receiving less than 10 inches of rainfall annually. These areas often have extreme temperatures, with hot deserts like the Sahara experiencing scorching days and cool nights, while cold deserts like the Gobi can have freezing temperatures. Deserts are home to unique ecosystems, featuring specially adapted plants and animals. Common vegetation includes cacti and shrubs, while animals such as camels and lizards have evolved to survive with minimal water. Despite their harsh conditions, deserts play a crucial role in Earth's biodiversity and climate regulation.