Unstructured interviews:
a. seldom provide useful or accurate data because they interviewer does not provide questions.
b. should only be used at the end of ones fieldwork.
c. contain open-ended questions and are paced by the interviewees and not the interviewer.
d. are all very short in duration because they never cover major topics.
e. always involve at least three individuals.
Question 2
Participant-observation has the advantage of
a. providing a large sample size.
b. ease of recording of data.
c. being an unobtrusive data gathering technique.
d. enabling fieldworkers to distinguish actual from expected behavior.
e. creating standardized, scientific data.
The phosphorus cycle. Numbers are 1012 g P or fluxes as 1012 g P per year (data from Schlesinger 199
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