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Rocks, Fossils, and Plate Tectonics.

Across
Largest span of geological time.
All Fossils on Earth.
Outer Layer of Earth composed of the crust and upper mantle
Natural feature of Earth's surface with a characteristic shape.
Limestone and Shale are forms of this rock.
Forms when lava or magma hardens.
Sections of Earth's Lithosphere that move on top of the fluid Asthenosphere.
Studies Volcanoes
Down
Studies Rocks
Fluid portion of Earth's mantle
Span of geological time based on the predominant form of life.
Studies Fossils
Studies Earthquakes
Earth material carried away by wind, water, or ice
Layer of the Earth below the crust.
Theory that says Earth's outer layers are made of moving plates.
A fossil that helps you determine the age of a rock. These species lived during a specific geological time.
Earth's rigid outer layer.