When magma solidifies it forms rocks. if a pre-existing rock is exposed to extreme heat or pressure its physical properties can change, forming a(n) rock. rocks derived from the weathered grans of other pre-existing rocks through lithification are rocks.

What must happen for new french words to be published in official dictionaries? a. they must be approved by the french academy b. they must be voted on by the people of france c. they must be used by famous french writers d. they must be used by philosophers a. they must be approved by the french academy