Ecology Relationships and Human Impacts

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Across
  1. 6. pollution coming from a single identifiable source
  2. 9. the gradual build up of a substance in an organism's body
  3. 10. the increased growth of algae due to fertilizer run-off
  4. 14. a symbiotic relationship where both species benefit
  5. 15. solid rock layer of soil that is impermeable by water
  6. 16. biotic interactions where one organism lives in, on, or neat another organism
  7. 17. a factor that prevents an increase in the number of organisms in a population
  8. 18. through the use of fertilizers, soil ____________ occurs, where there is a decrease in soil pH
  9. 21. the type of soil that drains well and is preferred for agriculture
  10. 22. a symbiotic relationship where one species benefits and the other is harmed
  11. 23. the covering on the ground that contains organic matter, minerals and moisture
Down
  1. 1. substances that become more and more concentrated in each link of a food chain
  2. 2. the process by which humans alter a habitat so that native species can no longer live there
  3. 3. the number of individuals that an ecosystem can maintain
  4. 4. soil _______ occurs when wind or water washes away soil
  5. 5. an interaction between two or more organisms who are competing for resources
  6. 7. using a resource faster than it can be replaced
  7. 8. the type of soil that blocks root growth and drains poorly
  8. 11. any substance added to the environment that are harmful to organisms
  9. 12. a symbiotic relationship where one species benefits and the other is unaffected
  10. 13. the long term alteration of our climate
  11. 19. the top layer of soil that is made of organic matter
  12. 20. non-native species that have been added to an ecosystem, which can disrupt food webs