Pollution flashcards

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What is meant by “Primary pollutant” in this lesson?Air pollution: A primary pollutant is emitted directly from a source.
What is meant by “Secondary pollutant” in this lesson?Air pollution: A secondary pollutant forms through reactions involving precursor substances.
What is meant by “Particulate matter” in this lesson?Air pollution: Particulate matter consists of suspended solid or liquid particles with health effects depending on size and composition.
What is meant by “Ground-level ozone” in this lesson?Air pollution: Ground-level ozone is a reactive pollutant formed through atmospheric chemistry involving precursor emissions.
What is meant by “Temperature inversion” in this lesson?Air pollution: An inversion can suppress vertical air mixing and allow pollutants to accumulate near the surface.
What is meant by “Exposure reduction” in this lesson?Air pollution: Reducing emissions or contact with pollution can lower exposure, with effectiveness depending on circumstances.
What is meant by “Point source” in this lesson?Water pollution: A point source releases pollution from an identifiable discrete location.
What is meant by “Nonpoint source” in this lesson?Water pollution: Nonpoint pollution comes from diffuse sources rather than one discrete outlet.
What is meant by “Eutrophication” in this lesson?Water pollution: Nutrient enrichment can stimulate growth and lead to oxygen depletion under suitable conditions.
What is meant by “Dissolved oxygen” in this lesson?Water pollution: Dissolved oxygen is oxygen present in water and available to many aquatic organisms.
What is meant by “Pathogen contamination” in this lesson?Water pollution: Pathogen contamination introduces disease-causing organisms into water.
What is meant by “Treatment barrier” in this lesson?Water pollution: A treatment barrier removes or inactivates a class of contaminants but may not address all pollutants.
What is meant by “Waste prevention” in this lesson?Waste and exposure pathways: Prevention avoids creating waste rather than managing it after generation.
What is meant by “Reuse” in this lesson?Waste and exposure pathways: Reuse extends a product's useful life without necessarily breaking it into raw materials.
What is meant by “Hazard” in this lesson?Waste and exposure pathways: A hazard is the potential of an agent or condition to cause harm.
What is meant by “Exposure pathway” in this lesson?Waste and exposure pathways: An exposure pathway describes how an agent reaches a person or organism.
What is meant by “Dose” in this lesson?Waste and exposure pathways: Dose is the amount received or absorbed under a specified measure.
What is meant by “Risk” in this lesson?Waste and exposure pathways: Risk combines the likelihood and consequences of harm under specified exposure conditions.