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I am a high school student and I am a little confused. In my textbook, while discussing the longitudinal pattern of biodiversity they say one of the reasons is that "tropical areas have more species diversity because there is more intense solar radiation which will increase vegetation and productivity which might indirectly affect the diversity of other species". There were other reasons as well, but I don't really understand this line. My teacher says, it is simple where there are more food resources species will love to live there but I think this is incorrect, species are not moved from temperate areas to tropical areas, they are always present abundantly in tropical areas. So how can more food relate to species diversity? Please explain in easy language without using many technical terms.

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    $\begingroup$ Does it help you to think about it in the other direction? Say, instead of comparing a rainforest to a temperate forest, compare a temperate forest to high on the Arctic circle? Or a desert? $\endgroup$
    – Bryan Krause
    Sep 18 '21 at 17:00
  • $\begingroup$ I didn't understand why are you trying to say , can u please answer this? $\endgroup$ Oct 3 '21 at 13:02
  • $\begingroup$ Does it make sense to you why you might find more species diversity in a temperate forest than a desert? If so, how would you describe that? $\endgroup$
    – Bryan Krause
    Oct 3 '21 at 14:35

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