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← HistoryWhen ancient Puebloans stored maize in subterranean kivas, which outcome resulted from uncontrolled respiration?
A)Increased carbon dioxide concentration✓
B)Reduced mold and fungal growth
C)Decreased ambient moisture levels
D)Enhanced long-term kernel viability
💡 Explanation
Increased carbon dioxide occurred thanks to cellular respiration, because metabolizing stored sugars consumed oxygen and released carbon dioxide; therefore CO₂ rose, rather than decreasing moisture or promoting kernel longevity in a confined underground space.
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