Thorn forests (tropical thorn scrub) grow in arid and semi-arid regions with low rainfall (less than 70cm annually). They are characterized by thorny, hard-leaved, widely spaced vegetation. Rajasthan and Gujarat have the ideal climate for thorn forests, receiving minimal rainfall and experiencing high temperatures. In contrast, Assam and Meghalaya have tropical rainforests due to heavy rainfall, the Malabar Coast has moist deciduous forests, and the Terai has moist sal forests.