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1: Active solar heating system 2: Soil 3: Feeder 4: Community 5: Carbon 6: Range 7: Fishery 8: Lead 9: Contamination 10: Water 11: Electricity 12: Change 13: Condition 14: Uptake 15: Conservation 16: Current 17: Japan 18: Hazard 19: Process 20: Atom (As of 00:26)
