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1: Active solar heating system 2: Soil 3: Feeder 4: Community 5: Carbon 6: Contamination 7: Fishery 8: Range 9: Lead 10: Condition 11: Water 12: Uptake 13: Conservation 14: Electricity 15: Current 16: Atom 17: Change 18: Japan 19: Process 20: Environment (As of 00:30)