Carbon and Nitrogen Cycle

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Across
  1. 5. A process where water bodies become enriched with nutrients, leading to excessive growth of algae and depletion of oxygen, often resulting from high levels of nitrogen and phosphorous.
  2. 9. Plants that have a symbiotic relationship with nitrogen-fixing bacteria, enabling them to convert atmospheric nitrogen into a form that plants can use.
  3. 10. Organic material, both living and once-living, such as plants, microorganisms
  4. 11. The extent to which nutrients, including forms of nitrogen, are available for uptake by organisms, influencing productivity and growth in ecosystems.
  5. 14. The biological oxidation of ammonia to nitrate, performed by certain bacteria and archaea, a crucial step in the nitrogen cycle.
  6. 16. The reduction of nitrates back into the largely inert nitrogen gas (N2), completing the nitrogen cycle.
  7. 17. The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
Down
  1. 1. Organisms that produce their own food from inorganic substances using light or chemical energy, playing a key role in the carbon cycle through photosynthesis.
  2. 2. Gases in Earth's atmosphere, such as carbon dioxide and methane, that trap heat and contribute to global warming.
  3. 3. The breakdown of dead organic material into simpler substances by decomposers like bacteria and fungi, releasing nutrients back into the environment.
  4. 4. A powerful greenhouse gas produced by soil cultivation practices, especially the use of commercial and organic fertilizers.
  5. 6. Organisms that cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition, contributing to the carbon cycle through respiration and decomposition.
  6. 7. The conversion of organic nitrogen (from dead bodies and waste products) into ammonia by decomposing bacteria and fungi.
  7. 8. The removal of a forest or stand of trees where the land is thereafter converted to a non-forest use, impacting carbon and nitrogen cycles.
  8. 12. The metabolic process by which living cells break down sugars, fats, and proteins to produce energy, involving the intake of oxygen and
  9. 13. A potent greenhouse gas produced through anaerobic decomposition, ruminant digestion, and fossil fuel extraction.
  10. 15. Dioxide A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, absorbed by plants in photosynthesis.