Environmental Science Crossword

1234567891011121314151617181920
Across
  1. 2. The number of births in a given period of time
  2. 3. The number of deaths in a given period of time
  3. 4. All the living and non-living components of an area
  4. 12. A group of the same species that interbreed
  5. 15. The range of the population
  6. 17. The number of individuals in a population
  7. 19. Studies the natural world and how humans affect it.
  8. 20. Groups of ecosystems with a similar climate
Down
  1. 1. The length of time an individual is expected to live
  2. 5. The spacial distribution of individuals within the population
  3. 6. All various populations in an area that interact make a
  4. 7. The parts of the Earth where life exists.
  5. 8. Non-living
  6. 9. The amount by which a populations size changes over time
  7. 10. Living
  8. 11. All similar organisms that can interbreed and produce viable offspring
  9. 13. When both species benefit
  10. 14. One organism benefits and there is no harm to the other organism
  11. 16. The study of the interactions of many organisms and their environment
  12. 18. One organism is helped, the other is harmed