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11 cards from this deck
Capture-Recapture Method
Snail
Pitfall trap
Non-toxic marker
Underside of shell
Areas that might attract predators
Replace back into habitat and reset traps
Same method as Day 1
Number of marked snails captured
(day 1 captured)×(day 2 captured)marked recaptured\frac{(day\ 1\ captured) \times (day\ 2\ captured)}{marked\ recaptured}marked recaptured(day 1 captured)×(day 2 captured)
10×155=30\frac{10 \times 15}{5} = 30510×15=30
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