The right option is OTEC
Ocean Thermal Energy Conversion (OTEC)
uses the temperature difference between deep cool ocean water and warm tropical
surface waters to produce electricity. Quantities of cold water that can be
used for air conditioning is produced as a by-product.
Yes. Oxygen crash led to Cambrian mass extinction
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.
oral groove because of the placement..
hope this helps!!