Across
- 2. Pollution that crosses the boundary of another country or ocean
- 5. When aerobic species have died off and anaerobic thrive creating toxins
- 7. Pollution so small it floats on the surface
- 8. When bacteria and viruses make their way into a water source and causing disease
Down
- 1. Pollution to above ground water sources
- 3. When water based ecosystems are thrown off balance from things like fertilizer
- 4. When toxins like fertilizer seep into the ground to contaminate water sources
- 6. When chemicals make their way into underground and surface water sources