Hot deserts experience extreme temperature fluctuations with daytime highs over 100°F and nighttime lows below freezing. Rainfall is also very limited at less than 20 inches annually. Plants and animals have developed adaptations to conserve moisture. Plants slow growth, store water, and have small leaves to prevent water loss. Animals regulate body temperature, make burrows to escape heat, and some hibernate during drought. The harsh climate also negatively impacts health as sandstorms can damage respiratory and vision, while heat leads to rapid dehydration through sweating.