<span>metamorphic rocks are exposed at the Earth's surface following erosion and uplift from the temperatures and pressures that occur at great depths within the Earth's crust.</span>
It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. Farmers in the Asian Region <span>will be most impacted if all artemisinin is grown synthetically. It is grown mainly in China and Vietnam. Hope this helps.</span>
the grasslands of South America are a low plain, not mountainous or rain forest
