According to the graphs of a marine food chain, what statement(s) describe what happened to the sea otter population after the introduction of killer whales? Select all that apply.
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A)
Sea otter populations migrated to warmer waters.
B)
Sea otter populations preyed upon fewer sea urchins.
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Sea otter populations decreased with the addition of a predator.
D)
Sea otter populations increased as the producer level increased.
E)
Sea otter populations increased in the presence of an additional predator.