vertebrate adaptations for gas exchange

• what are the five classes of vertebrates


  fish, amphibians, reptiles, birds, mammals
• where is life thought to have evolved from


  water
• what is meant by terrestrial


  a land living animal
• list examples of amphibians


  frogs toads and newts
• what is another word for a frogs larvae

  tadpoles
• how do tadpoles respire


  though gills in the water
• how do adult amphibians respire when inacitve


  though diffusion across their moist surface
• how do adult amphibians respire when active


  the lungs