TOEFL Listening: ETS-TOEFL听力机经 - V8T2WKV02A5J6536P$

What did researchers conclude after their experiment involving predatory fish? A. The predators of amphipods learn to interpret the amphipod and sea butterfly as one larger animal. B. The primary predator of amphipods does not have good eyesight. C. Amphipods and sea butterflies share, many of the same chemical compounds. D. The amphipods are protected from predators by chemicals in the sea butterfly.