B18 - Biodiversity and Ecosystems Crossword

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Across
  1. 3. A greenhouse gas released by burning fossil fuels and deforestation (6,8)
  2. 4. An organisms that obtain energy by eating other organisms (8)
  3. 8. Airborne particulate matter from combustion, contributing to air pollution and respiratory issues (5)
  4. 10. The increase in Earth's temperature due to human activities, impacting ecosystems (7,7)
  5. 11. The elimination of indigestible waste from an organism's body (8)
  6. 13. The variety of life within an ecosystem, crucial for a healthy planet (12)
  7. 17. A substance added to soil to enhance plant growth, sometimes causing nutrient pollution (10)
  8. 18. The preservation and protection of natural resources and ecosystems (12)
  9. 19. An organism that breaks down dead organisms and waste, recycling nutrients (10)
  10. 21. Disagreements or disputes over resources, land use, or environmental policies, that can impact food security (9)
  11. 24. Rows of shrubs and trees that serve as boundaries and wildlife habitats (9)
  12. 25. Wetlands rich in decomposing organic material, important for carbon storage (8)
  13. 28. The management and modification of natural environments for human activities, such as agriculture (4,3)
  14. 29. The top consumer in a food chain, with no natural predators (4,8)
  15. 31. The proportion of energy that is transferred between trophic levels (10)
  16. 34. A species at risk of extinction due to habitat loss or other threats (10)
  17. 35. Pyramids of __________. Diagrams representing the amount of living matter at each trophic level (7)
  18. 37. A genus of fungi, some species of which are used to produce mycoprotein (8)
Down
  1. 1. A high-protein food source used as a sustainable alternative to meat (11)
  2. 2. The process by which organisms release energy from food molecules (11)
  3. 5. A series of organisms that depend on one another for energy and nutrients (4,5)
  4. 6. Practices that meet current needs without compromising future generations (11)
  5. 7. The reliance of species on one another within an ecosystem (15)
  6. 9. An organism that converts sunlight or chemical energy into organic molecules (8)
  7. 12. Widespread food scarcity, often resulting from environmental or social factors (6)
  8. 14. The process of converting waste materials into new products, reducing resource consumption (9)
  9. 15. A disposal method for waste, potentially causing pollution and loss of habitats (8)
  10. 16. Wastewater rich in nutrients, which can lead to eutrophication (6)
  11. 20. ___________ farming. High-yield agriculture methods that maximize production, often at the expense of the environment (9)
  12. 22. A potent greenhouse gas emitted by livestock and agriculture (7)
  13. 23. The removal of trees and forests, leading to habitat loss and climate change (13)
  14. 26. Renewable energy sources derived from organic matter, such as plants or algae (8)
  15. 27. The natural environment where an organism lives and thrives (7)
  16. 30. An organism's position within a food chain, indicating its energy source (7,5)
  17. 32. Organisms that negatively impact human activities, such as agriculture (5)
  18. 33. A limit on the amount of fish that can be caught to preserve stocks and protect ecosystems (5)
  19. 36. A nitrogenous waste product of protein metabolism, excreted in urine (4)