Relier Pairs Animal classificationVersion en ligne Classify these sentences acording to vertebrates or invertebrates par Juan Antonio Vera 1 They represent the 98% of animals on Earth 2 They can be classified in mammals, reptiles, fishes, birds and amphibians 3 They have got an internal skeleton 4 They haven’t got internal skeleton or spinal cord 5 They own spinal cord and a developed nervous system Vertebrates Vertebrates Invertebrates Invertebrates Vertebrates