Question

When tagging animals specifically for the study of population size, scientists must do all of the following EXCEPT:

a.
tag all individuals during the first study to ensure accurate results
b.
make sure that markings do not harm the animal
c.
ensure that tags are non-toxic and will not come off of the animal
d.
ensure that the location and color of the tag does not draw the attention of predators

Answer 1

a.

In capture–mark–recapture studies you mark a sample of individuals, not the entire population. The other precautions (nonharmful, non‑toxic, durable tags that don't attract predators) are required.