science topic 1:1 and 2

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Across
  1. 4. consisting of many cells.
  2. 7. a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
  3. 8. generation the mistaken idea that living things arise from nonliving sources.
  4. 12. a living thing.
  5. 13. the most basic level of organization in the classification of organisms.
  6. 15. making a firm decision and not changing it.
  7. 16. the condition in which an organism's internal environment is kept stable in spite of changes in the external environment.
Down
  1. 1. nomenclature the classification system in which each organism is given a unique, two-part scientific name indicating its genus and species.
  2. 2. change over time: the process by which modern organisms have descended from ancient organisms.
  3. 3. the basic unit of structure and function in living things.
  4. 5. made of a single cell.
  5. 6. the process of grouping things based on their similarities.
  6. 7. any change or signal in the environment that can make an organism react in some way.
  7. 9. an action or change in behavior that occurs as a result of a stimulus.
  8. 10. the scientific study of how living things are classified.
  9. 11. evolution the process by which unrelated organisms evolve similar characteristics.
  10. 14. a taxonomic category that names a group of similar, closely-related organisms.