Why are scientists very concerned about frogs disappearing?
A. frogs are the first indi...
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Chemistry, 22.05.2020 15:57 HTKPenguin
Why are scientists very concerned about frogs disappearing?
A. frogs are the first indicators of widespread ecological change
B. frogs are top level predators
C. frogs form the bottom layer of many ecosystems
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Answers: 3
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