6. which of the following does not change the form of existing rock?
a. light
c. chemical processes
b. extreme heat
d. tremendous pressure

A. light

Explanation:

Light exposure cannot change a rocks form. Whereas chemical processes can affect a rock from changes in atmosphere, extreme heat can melt rocks, and tremendous pressure can change sedimentary or igneous rocks into metamorphic rock. Hope this helps!

answer; /// the correct )

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