Era is used to mark the boundaries of geological time scale by using radio carbon dating technique.
Explanation:
Geological time starts with Precambrian time.
Geologically, time is divided between the Precambrian era and present time into era.
The three eras are Paleozoic era, Triassic period and Cenozoic era.
Era is further divided into periods.
Scientists use radio carbon dating to study fossils and rock formation. With this study they were able to divide them in exact geological scale.
Geologic scale is the record of events in earth's history and evolution.
The substrate is the part that sticks into the active site of an enzyme.
Kinetic theory of matter is the movement of the particles of the substance and temperature is the measurement of hot or cold over a period of time
Answer:is a transfomation of a per existing rock
Explanation :Marble ,Slate.
