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When using the capture-recapture method to estimate population size, scientists make several assumptions. For example, they assume that each member of the population has the same chance of being captured and that the marks or tags won’t fall off or become unrecognizable. What other assumptions do you think would be reasonable when using this method?

What sort of problems might occur when using the capture-recapture method?


How do you think the size of the samples in a capture-recapture experiment affects the accuracy of the estimate?

What other populations might be estimated using a capture-recapture model?

How would you mark a fish for a capture-recapture experiment?

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