Investigation Phase IV: Why the tropics?
When you start thinking about why the tropics are such a diversity hotspot, the first thing that probably pops to mind is the climate. Sunshine. Rainfall. Temperature. After all, the climate that makes tropical destinations great for vacation might also attract other species. But before getting lost in these details, let's look at the question in a different way.
At the most basic level, three processes affect diversity in any region: new species being generated, existing species going extinct, and species moving in and out in other words, speciation, extinction, and migration:
How have these processes affected diversity in the tropics?
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