Direction: Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph.

A. The fossil plants indicate the age of the rock, and also point to facts regarding climate, temperature, and topography.
B. First there were water plants then land plants that appeared during the Paleozoic era and records of the history of the world are contained in fossils.
C. Through the ages, plants have evolved from simple to more complex forms.
D. Paleobotany is the study of fossil plants preserved in rocks dating back millions of years.
E. But since the fossil remains appear locked in rock layers, they are closely related to the geologist's area of investigation.