Chalk formed from sediments made of skeletons of microscopic living things in the ocean must be a (n)

Heat and pressure deep beneath the Earth\'s surface can change any rock into

Which assumption must scientists make about the rock cycle?

True or False Once a rocks changes into another rock it cannot change again.

A naturally occuring mixture of minerals, mineraloids, glass or organic matter is called

What kind of substances the rocks are made of is called what?

Rocks made from lava above ground are called

Rocks made from magma below ground are called

Rocks are classified according to their _______________ and composition.

Which rocks are called the fossil carrying rocks?

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