The Human Impacts on the Enviroment

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Across
  1. 3. Trash, such as paper, cans, and bottles, that is left lying in an open or public place
  2. 4. the introduction of harmful substances or products into the environment
  3. 6. a measure of how much something reflects light
  4. 7. precipitation, as rain, snow, or sleet, containing relatively high concentrations of acid-forming chemicals, as the pollutants from coal smoke, chemical manufacturing, and smelting, that have been released into the atmosphere and combined with water vapor: harmful to the environment.
  5. 11. an atmospheric heating phenomenon, caused by short-wave solar radiation being readily transmitted inward through the earth's atmosphere but longer-wavelength heat radiation less readily transmitted outward, owing to its absorption by atmospheric carbon dioxide, water vapor, methane, and other gases; thus, the rising level of carbon dioxide is viewed with concern.
  6. 12. a long-term change in the earth's climate, especially a change due to an increase in the average atmospheric temperature:
  7. 16. pollution of the atmosphere
  8. 17. diversity among and within plant and animal species in an environment.
  9. 19. to fish (an area) excessively; to exhaust the supply of usable fish in (certain waters):
Down
  1. 1. the aggregate of passively floating, drifting, or somewhat motile organisms occurring in a body of water, primarily comprising microscopic algae and protozoa.
  2. 2. an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect.
  3. 5. degradation of Earth's land surfaces often caused by human activities and their misuse of land resources
  4. 8. pollution of the water in rivers and lakes
  5. 9. the air, water, minerals, organisms, and all other external factors surrounding and affecting a given organism at any time.
  6. 10. to divest or clear of forests or trees
  7. 13. the circulation of carbon atoms in the biosphere as a result of photosynthetic conversion of carbon dioxide into complex organic compounds by plants, which are consumed by other organisms: the carbon returns to the atmosphere in the form of carbon dioxide as a result of respiration, decay by fungi, bacteria, etc., and combustion of fossil fuels.
  8. 14. any combustible organic material, as oil, coal, or natural gas, derived from the remains of former life.
  9. 15. oil petroleum as it comes from the ground, before refining.
  10. 18. a system formed by the interaction of a community of organisms with their environment.
  11. 20. the act of a person, animal, or thing that hunts.