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