0 • A • B • C • D • E • F • G • H • I • J • K • L • M • N • O • P • Q • R • S • T • U • V • W • X • Y • Z
1: Active solar heating system 2: Soil 3: Community 4: Feeder 5: Lead 6: Human 7: Carbon 8: Range 9: Water 10: Process 11: Current 12: Environment 13: Contamination 14: Electricity 15: Fishery 16: Condition 17: Atom 18: Conservation 19: Hazard 20: Plant (As of 00:23)
