Science Buddies: "Ask an Expert"

Hi,

I've always been puzzled by this question:Why is there more biodiversity near the equator? My guess was that it's due to the effect of the sun's rays and the angle that Earth is positioned, but are there other possible hypotheses of why this occurs? Also, is it possible to perform a research project on this topic and help other people understand my hypothesis using objects found in and around the home?

Thanks,
Albrecht

I think it has to do with water availability, which is determined by atmospheric conditions that pull moisture away from the land surface or release that moisture depending on location. https://en.wikipedia.org/wiki/Hadley_cell
Anything is possible if you get creative