Questions come from the Bluebook question bank.
Percentage of Available Eggs Eaten by Cane Toad TadpolesAmphibian species (common name) Percentage of eggs eaten Native to Australia Produces bufadienolide Little red tree frog 1% yes no Cane toad 90% no yes Short-footed frog 7% yes no Striped burrowing frog 10% yes no Dainty green tree frog 1% yes no
Native to Latin America, the cane toad was introduced to Australia in the 1930s. In recent decades, tadpoles in the Australian population have been shown to consume eggs of their own species. A 2022 study showed that when presented with cane toad eggs as well as eggs of native Australian amphibians, cane toad tadpoles disproportionately consumed eggs of their own species. This behavior results from their attraction to bufadienolide, a chemical produced by the eggs of cane toads but not by the eggs of native amphibians. However, using data from this study, a student wishes to argue that the presence of bufadienolide doesn’t entirely explain the cane toad tadpoles’ preference for certain eggs over others.
Which choice best describes data from the table that support the student’s argument?