HSC 180 Study Guide - Midterm Guide: National Ambient Air Quality Standards, Nitrogen Dioxide, Air Pollution
3 May 2020
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Document Summary
Primary pollutant: an air pollutant emitted directly from a source. Secondary pollutant: when primary pollutants react in the atmosphere. Ozone: hydrocarbons + nitrogen oxides group together in sunlight. Nitrogen dioxide: no + oxygen in the air. Acid raid: sulfur dioxide + nitrogen oxide in the water. Pm: solid particles + liquid droplets in the air. Epa strengthened air quality standards - pm 2. 5 can"t exceed 12 micrograms per cubic meter. By 2025, half of the world"s water = water - stressed. Physical scarcity: physical access to water = limited. Dry areas of the world or arid regions = physical scarcity. Area can"t facilitate adequate sources of water. An unequal distribution of resources for many reasons. Non-recyclable waste turned into heat, electricity, or fuel. Food grown in soil w/o prohibited substances for 3 years prior. For organic meat: they graze on pasture, fed 100% organic feed + forage and not admisistered antibiodics or hormones.
