Question

explain the characteristics
of class aves with body division , body temperature ,respiration and mode of reproduction​

Answer 1

Answer:

Three of the vertebrate classes are fish. The most primitive of these is Agnatha click this icon to hear the preceding term pronounced. It consists of jawless fish that do not have scales. These are the lampreys and hagfish. Fish that have skeletons consisting of hard rubber-like cartilage rather than bone are members of the class Chondrichthyes click this icon to hear the preceding term pronounced. These are the sharks and rays. All of the bony fish are members of the class Osteichthyes click this icon to hear the preceding term pronounced. Tuna, bass, salmon, and trout are examples of Osteichthyes.