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Our Fascinating Earth 3.2

Horizontales
Process that causes rocks to gradually break or crumble into smaller pieces
"float" like rafts on the soft rock of the upper mantle
Small particles of rock and decomposed plants and animals
Occurs when natural acids slowly eat into a rock and break it apart
The boundary between the crust and the mantle is called
Underwater mountain ranges
Study of Earth
Verticales
Thin layer of soil and a thick layer of sand and mineral fragments
Beneath the earth's crust lies the
When rock is broken down by water,ice,or windblown sand
Outer-most layer of the earth
Scientists who study the earth
The innermost region of the earth