You can use some answers more than once & some not at all. Ectothermic, lungs, rubbery eggs with amniotic shell, and a 3.5 chambered heart are all properties of which class 3-chambered heart Hair and is a K-strategist unidirectional air flow through the respiratory system Match the trait(s) to the critter. This class has animals that all fully separate oxygenated and deoxygenated blood and nucleated red blood cells Probable ancestor to terrestrial vertebrates based on the formation of their wrist bones Lack paired appendages Synapsid skull [Choose [Choose Mammal Amphibian Aves Agnathan Ray-finned fish Reptilian Lobe-finned fish True of all of the critters. Chondrichthyes [Choose ] [Choose ] [Choose ] [Choose ] [Choose ]

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Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.