What Caused the Dramatic Decline in Guam's Native Bird Species

question 79

Multiple Choice

What caused the dramatic decline in Guam's native bird species?

• A)the thinning of their eggshells and the subsequent death of their young as a result of heavy DDT use on the island in the 1970s
• B)radiation poisoning caused by nuclear tests of the United States and France
• C)the accidental introduction of the non-native brown tree snake
• D)the elimination by humans of its food supply
• E)climatic change in the region

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