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प्रश्न
Who developed the concept of ecological pyramids, and in which year?
विकल्प
C. Elton in 1972
C. Elton in 1921
C. Elton in 1827
C. Elton in 1927
MCQ
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उत्तर
The concept of ecological pyramids was developed by C. Elton. The stated year of development is 1927.
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