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83. The biosphere covers about

September 14, 2025 by Admin

8-10 km

5-10 km

15-30 km

16-20 km

✅ The correct answer is option D.

Categories Biology, Ecosystem MCQs Tags Biology MCQs, Ecosystem MCQs

80. Study of a single population’s relationship to its environment is called

86. Abiotic components include

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