Earth's geographical and geological organization is defined by complex regional tectonic, climatic, and biogeographic divisions that extend far beyond standard hemispheres.
The retrieved papers provide extensive evidence of geological, tectonic, and biogeographic divisions—such as ecoregions, subduction zones, tectonic provinces, and mountain biodiversity hotspots—that operate on a regional or local scale rather than conforming purely to standard global hemispheres. The claim is well-supported by multiple studies discussing these complex geographical and geological boundaries.