Sagot :
1.five main vertebrate groups alive today: the fishes, amphibians, reptiles, birds, and mammals.
2.nasa picture
![View image Genius0175](https://ph-static.z-dn.net/files/d05/1700b83d91af7511efe64758d1c46b45.jpg)
Answer:
1 vertebrates
five major groups: fishes, amphibians, reptiles, birds, and mammals. Fishes are almost all entirely aquatic
2 Invertebrates
are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord. This includes all animals apart from the chordate subphylum Vertebrata.