Is the major cause of extinction habitat fragmentation?

No, habitat fragmentation is not the major cause of extinction. The major cause of extinction is habitat destruction. Habitat destruction is the process by which natural habitats are converted into other uses, such as agriculture, development, or mining. This process can lead to the loss of biodiversity, as well as the extinction of species. Habitat fragmentation is a process that can occur as a result of habitat destruction, but it is not the major cause of extinction.