Techno2000:
And Eukaryotes split into 7 organisms ?
Look at your diagram again. Porifera (sponges) have already split off before your diagram starts. Then the Cnidaria (jellyfish) branch off. The next split is the Protostome/Deuterostome divergence before the Marinoan glaciation. All the other splits are similar: one clade diverges into two separate clades.
The diagram is obviously simplified. Chordates are not the only type of Deuterostome. Hemichordate worms and starfish (Echinoderms) are also Deuterostomes.
Life is a nested hierarchy within the “Life onEarth” kind. Think about people living on the American continent. There are three large groups: North Americans, Central Americans and South Americans. North Americans are split into USAnians and Canadians. USAnians are split into Texans, New Yorkers, Californians etc. The smaller groups are nested within the larger groups.
It is the same for living organisms. Humans are nested within Mammals, Tetrapods, Chordates, Deuterostomes and Eukaryotes.
This is basic
Evolution101. Do you not understand what it is you are arguing against? If you want to successfully argue against something, you need to understand it thoroughly.
rossum