Factors That Affect Population Size

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Across
  1. 6. many natural ____ caused dinosaurs to become extinct!
  2. 7. organisms drink this
  3. 10. pollution, deforestation, urban development are examples of how humans ______ our planet
  4. 12. rainy, snowy, sunny, hot, cold, humid, stormy
  5. 14. global ____ is an increase in the overall temperature of planet Earth due to human activity
  6. 15. when organisms permanently leave an environment
  7. 17. organisms eat this for energy
  8. 18. carrying ____ (Hint: starts with a C) is the maximum amount of organisms that an environment can support
  9. 19. organisms need this for protection
Down
  1. 1. an organism or species can ____ to their environment, increasing their chances of survival
  2. 2. illegal hunting/killing, catching or trading fish to sell and make money
  3. 3. when organisms temporarily leave an environment for a season
  4. 4. climate ____ is extreme global weather caused by human activity
  5. 5. ____-rate is how fast organisms reproduce
  6. 8. area that organisms need to find resources
  7. 9. ____-rate is how fast organisms die
  8. 11. genetic ____ (Hint: starts with a V) can give individual organisms in a population different traits (like hair color), sometimes giving one a survival advantage over the other
  9. 13. organisms compete for limited ____ like food, water, shelter and space
  10. 16. ____ species are new to an environment and disrupt the food chain