6. If an igneous or sedimentary rock gets so hot that it melts completely, it
does not become a metamorphic rock. Explain why.
7. Why is limestone referred to as the 'parent rock of marble?
8. Metamorphic rocks are generally formed deep below the surface of the
Earth. However, they are often found above the ground — even high in
mountain ranges. How can this be so?

the answer is:

carbon dioxide

not sure if this is what you'r looking for nnew= nold

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.

density and pressure