1.1-1.3 Crossword

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Across
  1. 3. A period in history when hunter-gatherers learned to farm and raise animals for food
  2. 5. anything added to an environment that is harmful to living things
  3. 7. A material found in nature that is useful
  4. 8. study of how living things interact with the environment
  5. 10. a repeating pattern
  6. 12. organism's natural and human-made surroundings
  7. 14. a group of organisms that can breed with each other
  8. 15. What humans have made (roads, buildings, etc.)
  9. 16. basic unit of life
  10. 18. a place where an organism lives
  11. 19. any chemical used to kill or control pests
  12. 22. to produce in large quantities
  13. 23. ability to do work
Down
  1. 1. all living and non-living things in nature
  2. 2. another word for farming
  3. 4. Revolution period in history when humans started using machines to produce food and other prodcuts
  4. 6. a living thing
  5. 9. a chemical that organisms need to grow
  6. 11. characteristics of the land
  7. 13. to break apart
  8. 16. languages, religions, customs, art, and dress of people
  9. 17. person who hunts, gathers, and moves from place to place
  10. 20. breed and produce offspring
  11. 21. scientific name for modern humans