The remaining animals, the great majority—comprising some 29 phyla and over one million species—sort the Bilateria clade, which have a bilaterally symmetric body program. The Bilateria are triploblastic, with three very well-designed germ layers, and their tissues sort distinctive organs. The digestive chamber has two openings, a mouth and an https://getsocialsource.com/story5704475/indicators-on-cheap-pet-food-you-should-know