Energy and Matter in Ecosystems!

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Across
  1. 3. A living thing or its product that affects an ecosystem.
  2. 5. Any form of water that falls from the sky.
  3. 8. Organic compounds found in Earth’s crust that are used as the world’s primary source of energy.
  4. 9. An organism that gets energy from eating other organisms.
  5. 12. A natural system of living things interacting with each other and nonliving things in their environment.
  6. 13. The relationship between organisms needing the same limiting resources within one environment.
  7. 14. All the living things on Earth and their interactions in the places they live.
  8. 16. Regions of Earth that contain water as solid, liquid, or gas on the surface and in the atmosphere.
  9. 18. An organism that makes its own food through the process of photosynthesis.
  10. 21. The part of a plant that grows from the stem and functions in making food through photosynthesis.
  11. 23. The process of introducing harmful gases or substances.
  12. 25. An organism that preys on, or eats, other organisms.
  13. 26. The process by which a liquid turns into a gas without reaching its boiling point. foodweb All of the paths that energy can take through an ecosystem.
  14. 29. Microscopic single-celled organisms found almost everywhere on Earth.
  15. 30. A living organism in an ecosystem that breaks down dead organic matter and recycles nutrients back into the environment.
Down
  1. 1. A process of plant reproduction in which the pollen fertilizes the ovary.
  2. 2. The ability to do work.
  3. 4. The part of a scientific experiment that is not changed.
  4. 6. An animal that feeds on plants.
  5. 7. A non-living chemical or physical factor in an environment that affects an ecosystem.
  6. 10. A natural home or environment for biotic factors.
  7. 11. A diverse group of organisms that live by absorbing and decomposing organic matter. geosphere Solid parts of Earth, such as soils, sediments and rocks, which is sometimes called the lithosphere.
  8. 15. The regurgitated parts of a consumed animal that cannot be digested by an owl.
  9. 17. The clearing of trees from the land, most often to create cropland.
  10. 19. The process by which plants use sunlight, water, and carbon dioxide to make food.
  11. 20. The process by which a gas becomes liquid.
  12. 22. The process by which a seed grows into a plant.
  13. 24. An organism that is hunted for food.
  14. 27. The mixture of gases that surrounds a planet.
  15. 28. To cut into separate parts.