Unit D Vocab

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Across
  1. 1. an element or compound an organism needs for metabolism, growth, or other functions
  2. 5. the variety of life in all its forms, including ecosystem diversity, species diversity and genetic diversity
  3. 7. the rapid growth of algae that can deplete the oxygen dissolved in the water an block the sunlight required by other organisms in the aquatic ecosystem
  4. 10. a diagram representing the movement of elements and compounds between living and non-living components of an ecosystem
  5. 12. The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct.
  6. 14. the dry mass of all the living matter organisms occupying a habitat
  7. 15. a type of soil bacteria that converts ammonia into nitrates an nitrites
  8. 17. a non-living organism in an environment
  9. 18. a species that may soon no longer exist within certain regions and/or may be threatened with imminent extinction
  10. 20. deep layers of mosses and plant remains unable to completely decompose due to the lack of oxygen in water-saturated soil
  11. 21. the process of converting ammonia into nitrates or nitrites
Down
  1. 2. the process of converting nitrogen gas into ammonia
  2. 3. a group of organisms, all of the same species that interbreed and live in the same area at the same time
  3. 4. the study of the interactions of living organisms with one another and with their physical environment
  4. 5. a living organism in an environment
  5. 6. the process by which cells convert the chemical energy stored in sugars into energy that the cells can use
  6. 7. the conversion of formerly continuous habitat into patches separated by non-habitat areas
  7. 8. an organism formed by the symbiotic association of a fungus and a photosynthesis alga
  8. 9. microscopic, photosynthetic organisms that play a vital role in marine and freshwater ecosystems
  9. 10. interacting populations living in a certain area at a certain time
  10. 11. a system that removes more carbon dioxide from the atmosphere than it releases ito the atmosphere
  11. 13. the permanent alteration of vital characteristics in an organism’s habitat
  12. 16. a species that does not normally occur in an area that is introduced by human action
  13. 19. all biotic and abiotic factors present in an area that encourage the reproduction and survivalof a particular organism