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1: Active solar heating system 2: Soil 3: Community 4: Feeder 5: Range 6: Fishery 7: Contamination 8: Lead 9: Japan 10: Hazard 11: Carbon 12: Change 13: Electricity 14: Process 15: Water 16: Atmosphere 17: Current 18: Sample 19: Condition 20: Bird abatement (As of 19:34)
