Four of the five answers listed below are nonrenewable resources. Select the exception. All chordates have notochords. All chordates have pharyngeal pouches or slits. All chordates have dorsal tubular nerve cords.
All chordates are vertebrates.
Chordates are found in all major types of environments. The term agnathan could be used to describe a. ostracoderms. Exchange of respiratory gases through the skin is a characteristic of many a. fish. Amphibians are completely dependent on an aquatic environment for a. respiration. Mammals are the only vertebrates that possess a. teeth.