A biologist originally marked 40 butterflies in Suva Park. Over a month long period butterfly traps caught 200 butterflies. Of those 200, 80 were found to have tags.
(a) What is the estimated population size of the butterflies in Suva Park?
What happens to the population size if:
(b) The number of animals originally marked is 100?
(c) The number of animals captured in the second effort is 300 (original number caught = 40)?

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?