Which of the following methods involves counting the number of organisms in a specific area?
a.

mark/recapture
b.

direct observation
c.

sampling
d.

indirect observation

The answer is C. The method which involves counting the number of organism in a specific area is sampling. It is one common method to estimate the population of certain organisms used by biologists. In a given range, the number of plot is determined and per plot the number of individuals is multiplied to the number of plots then this results to an approximate population size.

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