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1: Active solar heating system 2: Soil 3: Feeder 4: Community 5: Range 6: Carbon 7: Fishery 8: Contamination 9: Lead 10: Change 11: Water 12: Electricity 13: Japan 14: Hazard 15: Condition 16: Current 17: Process 18: Uptake 19: Conservation 20: Sample (As of 19:55)
