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: Lead 5: Carbon 6: Feeder 7: Current 8: Water 9: Human 10: Contamination 11: Process 12: Range 13: Environment 14: Fishery 15: Condition 16: Electricity 17: Conservation 18: Atom 19: Subdivision 20: Hazard (As of 23:32)
Environmental indicator (Deleted term 1993. See indicator.)
