Across
- 2. what makes a chemical NOT a _____ is its absence of Carbon.
- 3. a chemical used as a pesticide that spreads throughout food chains due to how persistent it is.
- 5. Exhaust pipes are a _____ because you can point at it and determine where the pollution is coming from.
- 7. the process of DDT being absorbed through food chains is called…
- 8. Trash in a land fill is a _____ because you cannot determine where the pollution is coming from or a direct source of it.
- 10. Carbon Monoxide is an example of a _____ because it comes from a direct source, aka cars.
Down
- 1. _____ are defined as pollutants that transform chemically so they don’t come from a direct source.
- 4. Moss indicates acidic soil, so scientists classify it as a ______
- 6. Exhaust from cars, buildings, etc. is trapped in the atmosphere due to heat.
- 9. Hint: What is DDT?