The document summarizes the climate and vegetation zones of South Asia. It describes how tropical rainforests grow along coastal regions receiving high rainfall, like Sri Lanka and the Bay of Bengal. These rainforests contain trees like ebony, vines and orchids. Deciduous forests surround the rainforests in the Western Ghats. Other forest types mentioned include bamboo and mango forests in Bangladesh and the extensive mangrove forests of the Sundarbans. The climate varies from tropical wet along the coasts to tropical dry savanna inland and deserts in the northwest, like the Thar Desert. Seasonal monsoons and cyclones impact the region, sometimes causing natural disasters.