Hot deserts are regions that receive very little rainfall, typically less than 10 inches per year. They are characterized by high temperatures during the day, often exceeding 100°F (38°C), and cooler nights. The lack of moisture leads to sparse vegetation, with plants like cacti and succulents adapted to survive in these harsh conditions. Common examples of hot deserts include the Sahara Desert in Africa and the Sonoran Desert in North America. These deserts are home to unique wildlife, such as camels and lizards, which have evolved to thrive in extreme temperatures and limited water availability.