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.
Lake Baikal is the oldest and deepest lake on Earth. It is located in southern Siberia, in Russia. The deepest and oldest freshwater lake in the world, Lake Baikal is located in southern Siberia. The lake contains about one fifth of the worldâs supply of fresh water and is also the ninth largest in surface area.