Archaeopteryx fossils are those of a prehistoric

The Shroud of Turin, the Iceman, and the Dead Sea Scrolls were dated by use of

The largest units of geologic time are the

Another name for cyanobacteria, the earliest evidence of ancient life, is

Stromatolites are structures created by

What type of volcano forms a layered, composite cone?

Which of the following volcanoes is in the United States?

The ______________ angle added to the altitude angle equals 90°.

______________ is defined as the angular measurement, in degrees, east or west of the Greenwich, or prime, meridian.

The actual amount of time it takes for Earth to rotate 360° on its axis is called a