Question

are
igneous rocks (and not metamorphic
Why
sedimentary rocks) known as
primary rocks? Think
and answer.​

Answer 1

Answer:

igneous are considered as primary rocks not because they form first ,no doubt they are oldest but they formed throughout the geological time and still forming . ... Igneous rocks are one of the three basic rock types.. other two are sedimentary and metamorphic .

Explanation:

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