Pick out the sentence(s) that correctly characterize marine birds. The class Aves only consists of marine birds. Marine birds have special glands to dispel salt from the water they drink. Most marine birds do not have waterproof features and have to bask in the sun to prevent disease. Penguins are the only marine birds that dive into and swim underwater. Penguins have flippers instead of wings.​
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Pick out the sentence(s) that correctly characterize marine birds.
The class Aves only consists o...
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