Based on the text, what changed for white monarch butterflies in the mid-1960s?
A The population of white monarch butterflies on Oahu was no longer being recorded.
B The white monarch butterfly population on Oahu had become extinct.
C The white monarch butterfly population on Oahu was increasing.
D The population of white monarch butterflies on Oahu was declining.
Based on the text, what changed for white monarch butterflies in the mid-1960s?
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The correct answer is D: The population of white monarch butterflies on Oahu was declining.
Explanation: In the mid-1960s, studies or observations typically indicated a decrease in the numbers of white monarch butterflies, suggesting that environmental changes or other factors led to the decline of their population on Oahu. This reflects broader concerns about species conservation during that time. If you need further clarification or deeper analysis, you might want to check the extended services page for more assistance!