Cycling of Matter and Flow of Matter

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Across
  1. 2. A living thing like bacteria or fungi that breaks down dead plants and animals.
  2. 5. Harmful things added to the air, water, or land that can hurt living things and the environment.
  3. 8. A state where things stay balanced and don’t change quickly in an ecosystem.
  4. 9. The movement of animals from one place to another, often to find food or better weather.
  5. 11. Material that comes from living or once-living organisms. This includes things like dead plants, animals, and waste.
  6. 12. The way carbon moves through the Earth, air, plants, animals, and back again.
  7. 13. The effect that people have on the environment, like pollution, deforestation, or helping to protect nature.
  8. 14. The usual weather conditions in a place over a long time, like how hot, cold, wet, or dry it is.
  9. 15. Something in the environment that living things need to survive, like water, food, or shelter.
  10. 18. When water covers land that is usually dry, often caused by heavy rain or melting snow.
  11. 19. The way living things act with each other and their environment.
  12. 21. The movement of nitrogen through the air, soil, plants, and animals. It helps living things get what they need to grow.
  13. 23. The removal or cutting down of trees in a forest, often to make room for farms or buildings.
Down
  1. 1. When organisms try to get the same resource (like food, water, or space) because there isn't enough for everyone.
  2. 3. A group of the same kind of organism living in the same place.
  3. 4. The natural home or environment of a plant, animal, or other organism.
  4. 6. A process where substances change into new substances. For example, when food is broken down in your body or plants turn carbon dioxide into oxygen.
  5. 7. A change in a plant or animal that helps it survive better in its environment.
  6. 10. The variety of living things in a place, like plants, animals, and tiny organisms.
  7. 16. All the living things and nonliving things in an area and how they interact with each other.
  8. 17. An organism, like a plant, that makes its own food using sunlight through photosynthesis.
  9. 20. An animal that eats plants or other animals for energy.
  10. 22. A large, uncontrolled fire that spreads quickly in a forest or grassland.