Populations Crossword Extra Credit

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Across
  1. 4. To calculate pop. density, divide population by land ______.
  2. 5. individuals of a single species living in an area
  3. 7. _______ sampling allows scientists to estimate the number of individuals within a given area.
  4. 10. The act of surviving!
Down
  1. 1. number of individuals living in a given area
  2. 2. In order to determine populations of animals, scientists use the ____ and recapture method.
  3. 3. Carrying ______ is the number of organisms that a region can support without environmental degradation.
  4. 6. Humans are an example of a type _____ survivorship curve.
  5. 8. When the pop. density is _____, individuals are well-spaced and are not clustered together
  6. 9. When the pop. density is _____, there are too many individuals, so they do not have much room and are clustered together.