Question

question 3
2 pts
during metamorphism, the elemental composition of the rock cannot change unless ________ occurs.
question 4
2 pts
which of the following minerals is most easily weathered?
potassium feldspar
olivine
amphibole
quartz

Explanation:

For Question 3, during metamorphism, the elemental composition of a rock can only change if mass - transfer processes like metasomatism occur. For Question 4, olivine is a relatively unstable mineral at Earth's surface conditions and is easily weathered compared to the others. Potassium feldspar, amphibole, and quartz are more resistant to weathering.

Answer:

Question 3: Metasomatism
Question 4: B. Olivine