Round 12: Tossup 7

An animal that feeds on this substance relies on endosymbiosis with Oceanospirillales bacteria. Cattle feeding on this substance is often an early indicator of a bovine botulism outbreak. The Epicyon and Borophagus genera of Miocene–Pliocene canines developed several adaptations for feeding on this substance. A genus of annelids often (10[1])called “zombie worms” (10[1])obtain lipids from this substance from whale carcasses. The turkey vulture is the only vertebrate that primarily feeds on this substance. (10[1])Three of the four (10[1]-5[1])species (10[1])of modern hyenas are named for their ability to “crush” (10[1])or “crack” (10[1])this substance. (10[1])Herbivores like giraffes may chew on this substance to obtain sufficient calcium and phosphate. For 10 points, osteophagy refers to feeding on what hard, mineralized tissue? (10[1])■END■

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