Ageologist finds a large rock containing a fern fossil. this kind of fern grew on land in hot, moist climates. what does this tell the geologist about the area at the time the rock was formed? a. the area was hot and tropical. b. the area was snowy and cold. c. the area was muddy and wet. d. the area was covered by the ocean

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?