UNIT 8A and 8B

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Across
  1. 6. To make something lighter or less heavy.
  2. 10. An approximation or rough calculation of something.
  3. 11. Passionate and eager interest.
  4. 12. Extremely large or intense.
  5. 15. The action of changing or rearranging the order of something.
  6. 16. Being alone or isolated from others.
  7. 17. A formal set of rules or procedures.
  8. 18. Showing a selfless concern for the well-being of others.
Down
  1. 1. The total amount or sum of many individual parts.
  2. 2. The inability to reproduce or produce offspring.
  3. 3. A person who studies plants, animals, and ecosystems.
  4. 4. A group or set of things taken as a whole.
  5. 5. To copy or mimic someone's actions.
  6. 7. The process of dividing something into parts.
  7. 8. The state or quality of being intricate or complicated.
  8. 9. The way one conducts oneself or reacts in different situations.
  9. 10. The state of a species or organism becoming completely wiped out.
  10. 13. Having the desired result; achieving the goal.
  11. 14. The action of protecting something from harm or attack.
  12. 19. Ordinary or frequently encountered; not rare or unique.