A Walk in the Park - Step 1

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Across
  1. 2. A group of individuals that can interbreed and produce fertile offspring
  2. 5. Environmental _____ is related to the amounts of toxic chemicals and other stressors in an environment
  3. 7. The gaseous envelope surrounding earth
  4. 8. Causes toxicity to organisms and/or other ecological damages
  5. 10. Any discarded materials
  6. 11. _____ countries have a relatively well-organized economic infrastructure and a high average per-capita income
  7. 13. A changeable factor that can be manipulated during an experiment
  8. 18. A Mass ____ event occurs when many species become synchronously extinct in a relatively short period of time
  9. 21. A carbon rich, solid fossil fuel
  10. 23. A place where a plant or animal lives
  11. 24. A combination of regularly interacting and interdependent elements
  12. 25. The presence of potentially damaging chemicals in the environment
  13. 27. A standard unit of energy, defined as the amount of energy needed to raise 1 g of pure water by 1 degree celsius
  14. 28. A persistent sheet of ice
  15. 29. A controlled test or investigation designed to provide evidence for, or preferably against, a hypothesis
  16. 30. An experimental treatment that was not manipulated and is intended for comparison with the manipulated treatments
  17. 32. Individuals of the same species that occur within the same space and time
Down
  1. 1. A standard unit of energy, defined as the energy needed to accelerate 1 kg of mass at 1 m/s^2 for a distance of 1 meter
  2. 3. A species gets listed as _____ because of its high risk of extinction
  3. 4. The _____ law of thermodynamics states that energy can undergo transformations among its various states, but it is never created or destroyed
  4. 6. _____ species are a dominant species in a community in which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically
  5. 9. Liquid rain, solid snow, or hail
  6. 12. Biological ____ includes genetic variability, as well as species and community richness
  7. 14. Occurring as a result of human influence
  8. 15. Environmental ____ are used to monitor human and nonhuman impacts on the environment
  9. 16. Short term meteorological conditions
  10. 17. A proposed explanation for a natural phenomena
  11. 19. A material harvested from the environment is a ____ resources
  12. 20. Long term meteorological conditions
  13. 22. The ______ method is an objective method to explore the natural world, draw inferences from, and predict the outcome of certain events, processes, or changes
  14. 26. A general term that refers to a set of scientific laws, rules, and explanations supported by a large body of experimental and observational evidence
  15. 31. A mixture of fragmented rock, organic matter, moisture, gases, and living organisms