The primary characteristic of desert ecosystems is their extreme aridity, resulting from low precipitation levels and high evaporation rates. Deserts typically have sparse vegetation, including specially adapted plants such as cacti and succulents that conserve water. These ecosystems also feature significant temperature fluctuations between day and night. Despite their harsh conditions, deserts support unique wildlife adapted to survive on limited resources. These adaptations include behaviors and physical traits that enable animals to find food and water and avoid extreme temperatures. Overall, desert ecosystems are remarkable for their resilience and specialization in extreme environments.