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