Chapter 25: Human Interactions with the Biosphere

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Across
  1. 4. Difference between the number of persons born per year and the number who die per year (2 words)
  2. 8. _______ engineering can produce transgenic plants with new and different traits
  3. 9. technique to remove every tree (2 words)
  4. 12. Variety of life on Earth and described in terms of the number of different species
  5. 15. These species crowd out the native species
  6. 16. This type of reproduction where a generation takes the place of the next
  7. 18. Reservoirs of water below the ground
  8. 20. Any undesired alteration of the environment and is often caused by human activities
  9. 22. _______ percent of freshwater is used to irrigate crops (number spelled out)
  10. 23. Removal of water from aquifers is causing land _______
  11. 24. Nonrenewable raw materials
  12. 26. Compressed remains of plants and animals that died millions of years ago
  13. 27. ________ intrusion is another consequence of aquifer depletion
Down
  1. 1. Accounts for 6% of electrical power generated in the US
  2. 2. Provides the same amount of good and services for future generations while preserving biodiversity
  3. 3. this type of erosion is caused by living right on the coast
  4. 5. Resources are capable of being naturally replenished
  5. 6. Human activities are causing the emission of these types of gases
  6. 7. Fertile land becomes desert, typically as a result of drought deforestation, or inappropriate agriculture.
  7. 10. Abbreviation for compounds that damage the Earth's ozone shield
  8. 11. ______ first name of person who created this puzzle
  9. 13. Maximum population the environment can support for an extended period (2 words)
  10. 14. Removal of trees
  11. 17. _______ energy is powered by steam
  12. 19. human population growth rate represents this type of graph
  13. 21. Resources that are in limited supply
  14. 23. Withdrawal of groundwater can cause __________
  15. 25. _____ energy is diffuse energy that must be collected, converted to another form, and stored if it is to compete with other forms of energy.
  16. 28. Agricultural ________ causes some pesticides and herbicides to enter our water supply