APES mind bender

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Across
  1. 1. the amount of energy used when a 1-watt electrical device is turned on for 1 second
  2. 4. time to promote a synergistic interaction
  3. 7. a cold and treeless biome with low-growing vegetation
  4. 9. in resource management, the known quantity of a resource that can be economically recovered
  5. 11. the evolution of new species
  6. 14. the movement of people out of a region
  7. 17. nonliving
  8. 18. the upward movement of ocean water toward the surface as a result of diverging currents
  9. 20. material outputs from a system that are not useful or consumed
  10. 21. areas of the world in which a species lives
  11. 22. an agricultural technique in which trees and vegetables are intercropped
  12. 25. a horizontal layer in a soil defined by distinctive physical features such as texture and color
Down
  1. 2. a secondary pollutant made up of three oxygen atoms bound together
  2. 3. an agricultural method in which two or more crop species are planted in the same field at the
  3. 5. evolution below the species level
  4. 6. livestock or poultry consumed as food
  5. 8. the outermost layer of Earth, including the mantle and crust
  6. 10. the physical removal of rock fragments from a landscape or ecosystem
  7. 12. a trait that improves fitness
  8. 13. a commercially harvestable population of fish within a particular ecological region
  9. 15. the process of one crustal plate passing under another
  10. 16. molten rock
  11. 19. the rate at which work is done
  12. 23. a physical location on the chromosomes within each cell of an organism
  13. 24. a measure of the acidity or alkalinity of a solution