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Vertebrates animals have got a spinal column or ainternal skeleton.They have three main part: the head,trunk and extremities.Their nervous system and senseorgans are very well- developed
Groups of vertebratesWe can classify vertebrates into five groups: fish ,amphibians , birds, mammals, reptiles
FishFish have got a long body that is covered with scales.They breathe with gills and they use their fins toswim.Almost all fish are oviparous. The females produceeggs and lay them in the water. Most fish are also someherbivorous and omnivorous. All fish have got askeleton, but there are two difference types.Bony fishand cartilaginous fish.
Amphibians When they are young they have gills to breathe underwater. When they are adult they have got lungs to breathe air, but they can absorb oxygen through their skin. Cuatenous respiration. They are oviparous animals. Most of them are carnivores. They eat insects, crustaceans, sanils, worms and small fish.
The two main groups ofamphibians Frogs and toads Salamanders and newts
Reptiles They have got hard scales on their bodies. They breathe by lungs. Reptiles are oviparous. Many are carnivores and others are herbivores. They main groups are: lizards, snakes, turtles and crocodliles.
Birds Birds have got feathers on their body, and also two legs and two wings. They breath by lungs, they are oviparous and they have got aerodynamic bodies. They can be herbivorous, granivorous, insectivorous, carnivorous or omnivorous.
MammalsThey usually got some hair on their bodies. All ofthem have lungs to breathe air. Female have gotmmary glands to produce milk to feed theiryoung.They can be carnivores, herbivores,insectivorous or omnivorous.