The Geologic Time Scale is a record of what?

Which of the following statements about the fossil record is true?

The Law of Superposition helps scientists to determine what?

How old do scientists (Paleontologists) believe the Earth is?

What type of rock do fossils form in?

Why is the fossil record incomplete?

Paleozoic, Mesozoic, and Cenozoic are all:

Which is the most recent era of time and is the one we currently live in?

Scientists chose where units of geologic time began and ended based on major changes in life forms at certain times.

Dinosaurs and reptiles were dominant during which era?

This is known as the Age of the Mammals

The disappearance of a species is known as:

This provides information about the history of life on earth, and how organisms lived and evolved over time:

Which period are we currently in?

Which geologic time division is the longest?

Which of the following sequences the geologic time divisions in order from oldest to youngest?

During which era did vertebrates first appear?

During which era did mammals first appear?

What was the name of the mass extinction that wiped out the dinosaurs at the end of the Mesozoic Era?

What was the name of the super-continent that formed about 260 million years ago?

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