Solid state.
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All rocks in the world were formed from the Earth's crust, so they exist in all states where land is present on the planet, including both the solid and fragmental states.
They are found in ALL parts of the world.
No, solutions can exist in different states of matter, not just in the liquid state. Solutions can exist in the solid, liquid, or gas state depending on the solvent and solute involved in the mixture.
All the isotopes from the decay chains exist in these rocks. The most important are the dangerous isotopes of radium and radon.
Geologists can't use rocks from Earth to determine the planet's age because those rocks have all been recycled through the rock cycle over time. This means that the original rocks from when Earth formed no longer exist. Instead, geologists use radiometric dating of rocks from Earth's surface to estimate its age.
no, there are more rocks