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Earth Science chapter 13

Ice formations studied by geologists
This project discovered that there are cracks deep in the mantle
Boundary between the crust and the mantle
The atmosphere protects us from ______
We know plants did not make the original ____ in the atmosphere
Area of mantle below the lithosphere
About 4-5% of the earth's core is ____
____ waves are used to study earth's structure
Middle layer of the earth
The ___ of the earth is 3 billion trillion metric tons
Scientist who studies the solid earth
Most of the earth's core is __
Outermost layer of the earth
Innermost portion of the earth
Upper mantle and crust
Compared to the rest of earth, the crust has ___ density
The _____ of the earth keeps the right amount of atmosphere for life
71% of the earth is covered by ___
This forms in the lithosphere
____ before freezing is a property of water