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an animal that cannot regulate its own body temperature, it must depend on the temperature outside its body
a type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together
an ectothermic animal that lives in water, breathes oxygen through gills, and has fins for swimming
fish that have bony skeletons, paired fins, scales, jaws, and some have teeth; goldfish and salmon are examples
fish that have round suction cup mouths, rasping tongues, some have teeth, no scales, and they suck body fluids from other animals
sharks, rays, and skates; fish that have carilaginous skeletons, jaws and teeth, all are carnivores
a small sac in a bony fish that can be inflated with air to help a fish swim at shallower depths, or deflated to help the fish sink to deeper water
an ectothermic vertebrate that starts life in the water, lives in water during a larval stage, then undergoes a metapmorphosis to be able ot live its adulthood on land
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