<Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> Tropical forests cover a large part of the globe, but temperate rainforests only occur in few regions around the world . Temperate rainforests are rainforests in temperate regions . They occur in North America (in the Pacific Northwest in Alaska, British Columbia, Washington, Oregon and California), in Europe (parts of the British Isles such as the coastal areas of Ireland and Scotland, southern Norway, parts of the western Balkans along the Adriatic coast, as well as in Galicia and coastal areas of the eastern Black Sea, including Georgia and coastal Turkey), in East Asia (in southern China, Highlands of Taiwan, much of Japan and Korea, and on Sakhalin Island and the adjacent Russian Far East coast), in South America (southern Chile) and also in Australia and New Zealand . </P> <P> A tropical rainforest typically has a number of layers, each with different plants and animals adapted for life in that particular area . Examples include the emergent, canopy, understory and forest floor layers . </P> <P> The emergent layer contains a small number of very large trees called emergents, which grow above the general canopy, reaching heights of 45--55 m, although on occasion a few species will grow to 70--80 m tall . They need to be able to withstand the hot temperatures and strong winds that occur above the canopy in some areas . Eagles, butterflies, bats and certain monkeys inhabit this layer . </P>

How many layers does the tropical rainforest have
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