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1: Soil 2: Community 3: Article 4: Human 5: Lactation 6: Caterpillar 7: Range 8: Periplaneta americana 9: Maximum mid-expiratory flow rate 10: Japan 11: Treatment 12: Holistic environmental restoration 13: Environment 14: Ecosystem 15: Development 16: Quality 17: Plant 18: Process 19: Potential 20: Lead (As of 00:14)
A Particulate Matter is a tiny (microscopic) matter in the atmosphere. It might be solid or liquid.
