My trial lesson

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Invertebrates

• The first animal group to evolve 1 billion years ago.
• Characterized by their lack of backbone.
• Examples: Insects, Worms, and Octopuses

Fish

• Evolved from invertebrates about 500 million years ago.
• Fish have backbones.
• Fish breathe under water using gills.
• Examples: Salmon, Sharks, Clownfish

Birds

• Birds evolved from dinosaurs.
• They are the most plentiful flying vertebrates.
• Birds are characterized by their coats of feathers.
• Examples: Parakeets, Ostriches, Bluejays, and Penguins.

Reptiles

• Characterized by their cold blooded metabolism. 
• Reptiles get their energy by exposure to the sun. 
• Reptiles have scaly skin and lay leathery eggs.
• Examples: Turtles, snakes, crocodiles, and lizards.

Amphibians

• Amphibians must live near a body of water.
• Amphibians are the most endangered animals in the world.
• Examples: Frogs, Toads, and Salamanders.

Mammals

• Mammals are characterized by their hair or fur.
• Mammals produce milk for their young.
• Mammals are warm-blooded.
• Examples: Humans, Dogs, Tigers, Zebras.