1) the concept of an immense scale of prehistoric time that stretches far beyond human history, allowing geologists and paleontologists to understand the development and changes of Earth over billions of years a) period b) eon c) deep time d) era 2) the largest division of geologic time, comprising two or more eras, which covers significant stretches of time and is often divided into the Phanerozoic, Proterozoic, Archean, and Hadean a) period b) era c) geologic timescale d) eon 3) a major division of geologic time characterized by distinctive fossils and rock formations a) era b) period c) eon d) deep time 4) a larger division of geologic time made up of multiple periods a) eon b) period c) deep time d) era 5) a subdivision of a period characterized by distinctive fossils and rock formations a) epoch b) era c) eon d) deep time 6) the record of geologic time a) period b) eon c) epoch d) geologic timescale

Geologic Timescale

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