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Which is the hypothesis found in this introduction?
Read the introduction from a geology book
Metamorphic rocks are rocks which have changed from
one type to another. For example, slate is a metamorphic
rock made by clay Scientists believe that heat and
pressure are two important elements in changing rocks
The following experiment with aluminum foil will help prove
this theory
Metamorphic rocks are rocks which have changed
Slate is a metamorphic rock made by clay
An experiment with aluminum foil will prove a theory
Heat and pressure change rocks from one type to
another