Environment

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Across
  1. 4. Plastic pieces smaller than 5 mm
  2. 5. Increase in pollutant concentration at higher trophic levels
  3. 7. Tiny airborne particles that can enter the lungs
  4. 8. Gas mainly responsible for global warming
  5. 9. Renewable practice that helps reduce pollution by processing waste materials
  6. 10. Contamination of the atmosphere by harmful gases
  7. 11. Harmful substance that contaminates the environment
  8. 12. Main greenhouse gas emitted from landfills and livestock
Down
  1. 1. Excessive growth of algae due to nutrient pollution
  2. 2. Pollutant produced by incomplete combustion
  3. 3. Process by which toxic substances build up in organisms over time
  4. 6. Rain made acidic by sulfur and nitrogen oxides
  5. 8. Chemical once used in refrigerators that depleted the ozone layer