Purple coneflower is a common plant in indiana. one year during a drought, the plants that had a shorter growing period survived better than the ones with a longer growing period. what effect did this most likely have on the plants? a) there was no change. b) the plants all died out. c) the plant adapted to have a longer growing period. d) the plant adapted to have a shorter growing period.

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?