ecosystem

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Across
  1. 2. that obtains energy by eating animals
  2. 5. that feeds on plant and animal remains and other dead matter
  3. 6. Transport Chain-a series of proteins in which the high-energy electrons from the Krebs cycle are used to convert ADP into ATP
  4. 10. cycle-reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugars
  5. 11. factor-biological influence on organisms within an ecosystem
  6. 12. that obtains energy from the foods it consumes; also called a consumer
  7. 13. Model-natural ecosystems which are defined as the network of interactions among organisms and between organisms and their environment, social ecology is a framework or set of theoretical principles for understanding the dynamic interrelations among various personal and environmental factors.
  8. 15. factor-physical, or nonliving, factor that shapes an ecosystem
  9. 16. collection of all the organisms that live in a particular place, together with their nonliving environment
  10. 17. that obtains energy by eating only plants
  11. 21. units of the chloroplast
  12. 26. that breaks down and obtains energy from dead organic matter
  13. 27. that relies on other organisms for its energy and food supply; also called a heterotroph
  14. 28. that obtains energy by eating both plants and animals
  15. 31. the movement of ions across a selectively permeable membrane, down their electrochemical gradient.relates to the generation of ATP by the movement of hydrogen ions across a membrane during cellular respiration or photosynthesis.
Down
  1. 1. Level-step in a food chain or food web
  2. 3. oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate.
  3. 4. amount of living tissue within a given trophic level
  4. 7. of nitrates into nitrogen gas
  5. 8. by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
  6. 9. area where an organism lives, including the biotic and abiotic factors that affect it
  7. 14. the process by which the organically bound nitrogen of microbial, plant, and animal biomass is recycled after their death
  8. 18. cycle-process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another
  9. 19. effect-natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases
  10. 20. that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph
  11. 22. of water from a plant through its leaves
  12. 23. that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
  13. 24. range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions
  14. 25. fixation-The process in plants and algae by which atmospheric carbon dioxide is converted into organic carbon compounds, such as carbohydrates, usually by photosynthesis
  15. 29. Web-network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem
  16. 30. fixation-process of converting nitrogen gas into ammonia