Why? Is it only because tropic zone has a higher temperature?
为什么会出现这种情况？仅仅是因为热带比寒带更热？
This indicates that these climatic events exerted influence on sea area around tropic zone.
这表明快速的气候变化事件也会影响到热带海区。
There are about 190 species of Diospyros in the world. They mainly distribute in the tropic and subtropic zone, especially in East Asia.
全世界的柿属植物共约190种，主要分布在热带和亚热带，尤其是东亚。
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