Why are repair scars on the shells of prey species the only reliable evidence for the frequency of predation by shell crushing predators? Group of answer choices shell crushing predators were rare during the Mesozoic most shells of prey species have repair scars repair scars are only evident on large-sized prey successful predation attempts are impossible to identify in the fossil record predation attempts by shell crushers were rarely successful
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Explain why fossils that form in sediments usually only include the hard parts of animals. True or False
Why is fossil evidence usually not enough to give a complete record of evolution? (Click on all that apply:) Teeth and shells do not fossilize. Soft-bodied organisms do not readily fossilize. Some fossils are buried too deep for scientists to reach. Organisms that are eaten after death are unlikely to fossilize. Movement of Earth's crust destroys some fossils.
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