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Which type of rock is formed by the cooling and solidification of magma?
- Sedimentary
- Metamorphic
- Igneous
- Fossiliferous
Answer: Igneous
Igneous rocks are formed by the cooling and solidification of magma or lava. Examples include granite (intrusive, cooled slowly underground) and basalt (extrusive, cooled quickly on surface). Sedimentary rocks form from deposition, while metamorphic rocks form under heat and pressure.