Answer:
The metamorphic rock.
Explanation:
The metamorphic rock went under heat and pressure before being sandwiched in silt to become part of sedimentary rock. Think of it like the McFlurry. You've got to bake the Oreo before adding it to the ice cream.
Mold spores float around in the air, so in many countries its basically impossible to keep them away from your bread.
B) damming rivers and lakes
It has a natural gas, coal, and oil.