life below water

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Across
  1. 3. The vast body of salty water that covers most of the Earth's surface
  2. 5. The process of the ocean becoming more acidic due to CO2 absorption
  3. 6. Waste that ends up in the ocean, harming marine life
  4. 9. Tiny ocean organisms that form the base of the marine food web
  5. 10. Areas of the ocean protected for marine conservation
Down
  1. 1. Keeping the ocean clean by preventing pollution
  2. 2. The act of catching too many fish, harming the fish population
  3. 4. Places where water meets land
  4. 7. Reducing the use of something to avoid waste
  5. 8. Animals and plants that live in the ocean
  6. 11. A gas absorbed by oceans that contributes to ocean acidification