Aquatic Currents

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Across
  1. 4. Animals hunted by predators
  2. 6. Process by which producers make food by sunlight
  3. 7. The continuous movement of water in a river or ocean
  4. 9. A sequence showing who eats who in an ecosystem
  5. 10. The movement of energy through organisms
  6. 13. A network of interconnected food chains
  7. 15. Waste organic material in water
  8. 16. Organisms that must eat others to gain energy
  9. 19. Organisms that break down dead matter
  10. 20. The process of breaking down food to release energy
  11. 21. Animals that eat other animals
Down
  1. 1. Essential elements cycled in ecosystems (like nitrogen, phosphorus)
  2. 2. Tiny floating plants that do photosynthesis in the water
  3. 3. Basic unit of energy transfer in aquatic systems
  4. 5. A cycle that shows the flow of water
  5. 8. Floating animals that feed on phytoplankton
  6. 11. A large area where aquatic organisms live and interact
  7. 12. Green aquatic organisms at the base of food chains
  8. 14. The total mass of living organisms in a given area
  9. 16. Movement of matter like nitrogen or carbon
  10. 17. What our lungs need to function
  11. 18. Animals that consume both plants and animals
  12. 22. The movement of water from a source that leads to the ocean