Across
- 2. A type of plankton that is not microscopic.
- 6. Areas of a river where water moves quickly.
- 7. This structure allows seaweeds to attach to the ocean bottom.
- 8. Areas of a river that are calm.
- 11. When plants die they are broken down, or ________________.
- 12. Insects such as ________________ cling to rock bottoms.
- 13. An aquatic plant capable of photosynthesis.
- 14. Animal plankton.
- 17. Most marine organisms in the ocean live here.
- 20. A population explosion of algae.
- 21. These marine plants do not have roots, flowers, or leaves.
- 23. This aquatic creature can move between fresh and salt water systems.
- 24. Organic matter produced by decaying bodies of plants and animals.
- 25. Aquatic plants have these on the top of their leaves.
- 26. A small, shallow, calm body of water.
Down
- 1. Most aquatic animals use these organs to help them get oxygen from the water.
- 3. Several overlapping food chains.
- 4. Large aquatic animals are able to move easily through water because of this type of shape.
- 5. Sweeps food into its mouth by waving its legs.
- 8. Plant plankton.
- 9. Variety of adaptations of living things.
- 10. The concentration of a toxin is magnified through the food chain.
- 15. A small fish that is a vital link in the food chains of many marine animals.
- 16. When you take aquatic plants out of the water, this will often happen.
- 17. Process of making food using energy from chemical reactions.
- 18. A crack in the ocean floor that release heat and minerals.
- 19. Sequences of feeding relationships between organisms.
- 22. In the Great Lakes, abundance and mix of fish populations if declined due partly to ________________.