A team of scientists is studying three different layers of sedimentary rock to learn about a particular bird species. In the layer of rock that is closest to the Earth's surface, the birds' beak fossils are found to be short and straight. In the layer below, the birds' beak fossils are found to be long and straight. In the layer below that, the birds' beak fossils are found to be long and curved. Based on this information, the birds today most likely have A. no beaks. B. long, curved beaks. C. short, straight beaks. D. long, straight beaks.



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