Scientists theorize that Australia was once part of a larger mainland area but due to plate tectonics, broke away. According to
island theory, scientists can explain ALL BUT one of these occurrences as a result of Australia becoming and staying an island for a very long time. That is
Island theory suggests that you would see all but a large assortment of plant dispersal mechanisms on a well-established island that was once part of a mainland. The plants no longer need an array of dispersal mechanisms; they breed with like species that are near-by on the island. Also, they have an established niche in that location that has proven successful over the decades; whatever they are doing is working.
The process that lead to the formation of the distorted, wavy patterns found in metamorphic rock is regional metamorphism(as heat and pressure increases, minerals become segregated into bands).
