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1: Active solar heating system 2: Soil 3: Feeder 4: Community 5: Carbon 6: Range 7: Fishery 8: Contamination 9: Lead 10: Water 11: Condition 12: Uptake 13: Electricity 14: Current 15: Conservation 16: Atom 17: Change 18: Process 19: Environment 20: Human (As of 20:45)
Deutsch: Feinstaub / Español: Partículas en suspensión / Português: Material particulado / Français: Particules en suspension / Italiano: Particolato
A particulate is of or relating to minute discrete particles; a particulate substance.