Birds: They lay their eggs with shells., Their skin is covered with feathers to keep them warm., Mammals: Their bodies are covered with hair or fur., They produce milk to feed their babies., Fish: Their bodies are covered with scales., Most take in oxygen from the water through gills., Amphibians: They live mainly on land, but breed in water., They have a soft, wet skin with no scales., Reptiles: They breathe with lungs., They have dry skin covered with scales.,

Review of units 7 -8 (2)

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