Abiotic refers to NONLIVING things. Such as rocks..
Sooooo it would be water because although there are so many living things in water the actual chemical compound of H2O is nonliving.
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You should have two different teams that represents scientific ideas as the name of the teams and have them play like that
Biogeographical studies use information for various fields, such as evolutionary biology, geography, geology, and climate science to determine how organisms evolved through time and how the moving of tectonic plates resulting in forming continents, mountain ranges and islands has affected their distribution.
Studies in this field explain how organisms that now live on different continents are very closely related and how the flora and fauna of islands are connected to one of the closest continents etc.