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| IV. Greater ECOLOGICAL EFFICIENCY |
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| allows more trophic levels in the food chain: |
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| • | Community Ecol Eff Trophic Level
Links |
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| • | Open ocean 25% 7 6 |
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| • | Coastal marine 20% 5 4 |
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| • | Temp. Grassland 10% 4 3 |
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| • | Tropical Forest 5% 3
2 |
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| • | Why? |
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