Protozoa (kingdom Protoctista) A phylum (division) of eukaryotic, single-celled micro-organisms which show a wide variety of forms. The phylum includes some plant-like forms and animal species that are free-living, commensal, mutualistic, and parasitic, and some important disease-causing organisms.
Lake Baikal in Siberia, Russia (Asia), is the world's deepest fresh water lake at 1,638 metres deep. It is 636 km long and is the world's sixth largest lake and 1,181 metr â¦ es of it is below sea level. It contains 20% of the world's fresh water which is so clear that divers suffer from vertigo.
Â©EVGEN, 2008. Lake Baikal is in a rift valley created by the Baikal Rift Zone, where the crust of the earth is pulling apart. At 636 kilometers long and 79 kilometers wide, Lake Baikal has the largest surface area of any freshwater lake in Asia (31,494 skm) and is the deepest lake in the world (1,637 m).