You can administer Drontal tablet orally or mix it in the cat food. There is no need to fast before or after the treatment. Kittens need to treated with Drontal Allwormer at 6, 8, 12 weeks of age then continuing every 3 months. Adult cats need to be administered with this treatment regularly every 3 months.
Speciation is the evolutionary process by which biological populations evolve to become distinct species. The biologist Orator F. Cook coined the term 'speciation' in 1906 for the splitting of lineages or cladogenesis, as opposed to anagenesis or phyletic evolution within lineages.
Allopatric speciation is just a fancy name for speciation by geographic isolation, discussed earlier. In this mode of speciation, something extrinsic to the organisms prevents two or more groups from mating with each other regularly, eventually causing that lineage to speciate.