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Which rock type is pumis?

What is the inner-most layer of the Earth called?

Which of these is there most of in the Earth's crust?

Limestone

Gneiss

Basalt

What is the outer core?

Sediments settle in one place

Another substance hardens between sediments, turning sedimeants into rock

Smaller pieces of rock

Sediments can be moved by water, ice, wind, or gravity

Breaks down rocks into smaller pieces

Over many years, the weight of sediments above compress sediments below into a rock

The combined process of weathering and transport