This document discusses particulate matter and industrial pollutants. It defines particulate matter as microscopic solid or liquid particles suspended in the atmosphere. It describes the composition, size, and types of particulate matter. It then discusses the effects of particulate matter on human health, vegetation, and the environment. For industrial pollutants, it defines them as pollutants from industry and describes common types, their effects on health and environment, and ways to prevent industrial pollution. The document contains questions for each section to test understanding.