Our new unit is on Vertebrates. All vertebrates have a backbone.There are 5 kinds of vertebrates: fish, mammals, amphibians, birds, and reptiles. Here is a link to more information on vertebrates. Another helpful website is http://www.davidlnelson.md/Cazadero/FiveVertebrates.htm.
Fish: cold-blooded, most have scales, breath in water (gills)
Birds: warm-blooded, feathers, lay eggs
Reptiles: cold-blooded, scales, lay eggs
Amphibians: cold-blooded, start out living in water with gills and transition to land growing lungs (transition), lays eggs in water
Mammals: warm-blooded, nurse their young, fur/hair
Invertebrates are animals that do not have a backbone/spine.
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