Unit 4 Exam Review

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Across
  1. 2. heat generated from infrastructure being trapped leading to warmer temperatures in the city than the outskirts
  2. 3. Each organism stores pollutants and as it is consumed, the pollutants magnify
  3. 7. Increasing water temperatures can cause large fish kills because the amount of oxygen the water can hold decreases
  4. 10. An area in which the land and the ecosystems it supports are protected from all exploitation. Without these private parks and preserves around the world, many more species would now be extinct
  5. 11. forms when a primary pollutant comes into contact with other primary pollutants or with naturally occurring substances such as water vapor, and a chemical reaction takes place
  6. 13. An underground formation that contains groundwater
  7. 14. a pollutant that is put directly into the air by human activity
  8. 16. when pollution is discharged from a single source
  9. 17. fresh water on Earth’s land surface
  10. 18. process of cutting and removing only middle aged or mature trees. More expensive but less destructive
Down
  1. 1. process of removing all trees from an area of land. Destroys wildlife habitat and causes soil erosion
  2. 4. Pollution that comes from many different sources that are often difficult to identify
  3. 5. water stored beneath the Earth’s Surface in sediment and rock formations
  4. 6. all of the things that society builds for public use
  5. 8. a method of providing plants with water from sources other than direct precipitation
  6. 9. Allowing more animals to graze in an area than the range can support
  7. 12. The clearing of trees from an area without replacing them
  8. 15. The process by which trees are planted to re-establish trees that have been cut down in a forest land