1.

9^3×27×81/3^-2×3^4×243​

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-step explanation:An ecosystem is a geographic AREA where plants, ANIMALS, and other ORGANISMS, as WELL as WEATHER and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. ... Ecosystems can be very large or very small.



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