Translations:AY Honors/Rainforests/Answer Key/57/en
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The equator is heated by direct sunlight. As air rises, the water vapor cools and condenses and falls as rain causing the tropical rainforest. This is why tropical rainforests are mostly found along the equator (see the pattern labeled "Hadley cells" in the diagram). The drier air moves north and south of the equator and falls, causing deserts to form. Similar convection currents occur at 60 degrees north and south causing the temperate rain forest. This is why temperate rainforests are mostly found between the poles and the equator (see the pattern labeled "Ferrel cells" in the diagram).
