Highest Average Net Primary Productivity:
1. Algal beds and coral reefs = 2,500 g/m2/yr
2. Tropical rainforest = ~2,200 g/m2/yr
3. Estuary = 1,500 g/m2/yr
According to this graph, algal beds and coral reefs have the highest net primary productivity.
B) Not supported
C) Cannot be determined from this graph.
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