DOKs

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Across
  1. 7. engineering- that intend to integrate human society with the natural environment for the benefit of both
  2. 8. refers to the clarity of the water
  3. 10. uses flows of water to produce electricity
  4. 11. when precipitation washes chemicals such as fertilizer from nearby farm into a water system, like a pond
  5. 12. describes all the biotic factors in a particular area
Down
  1. 1. something in an ecosystem that is required by an organism
  2. 2. any place where an organism lives
  3. 3. factors- living parts of the environment, such as plants, fungi, animals, bacteria, etc.
  4. 4. factor- nonliving parts of the environment, such as water, air, rocks
  5. 5. the amount of organisms in a certain place
  6. 6. hardness- refers to the measure of concentration of dissolved minerals, like calcium or magnesium, found in water
  7. 7. composed of all the living and nonliving things within the area, and is a complex system made up of interacting organisms and their environment
  8. 9. all the world's ecosystems