Intro to classification

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  • 1. Classification of Animals Scientists have divided the Animal Kingdom into two main groups: vertebrates (animals with a backbone) invertebrates (animals without a backbone) and
  • 2. Vertebrates Animals with backbones can be divided into five more groups: Mammals Birds Reptiles Amphibians Fish
  • 3. Invertebrates Animals without a backbone.
  • 4. Vertebrates Animals with a backbone.
  • 5. Mammals • Give birth to live young. • Feed their babies with their own milk. • Are more or less covered with hair. • Are warm-blooded.
  • 6. Birds • Have feathers. • Lay eggs. • Are warm-blooded.
  • 7. Reptiles • Are cold-blooded. • Lay eggs. • Have a dry skin covered with scales.
  • 8. Amphibians • Are cold-blooded. • Lay eggs. • Have a smooth, moist skin. • Are able to live on land as well as in the water.
  • 9. Fish • Are cold-blooded. • Lay eggs (but some do give birth to live young). • Have a moist skin covered in scales. • Breathe through gills.
  • 10. Fish • Are cold-blooded. • Lay eggs (but some do give birth to live young). • Have a moist skin covered in scales. • Breathe through gills.