True because it the word pre means before
V-shaped valley
As the river erodes downwards the sides of the valley are exposed to freeze-thaw weathering which loosens the rocks (some of which will fall into the river) and steepens the valley sides. The rocks which have fallen into the river help the process of corrasion and this leads to further erosion.
Answer:
This is a temporary problem which can be regained as losing hair is not a permanent problem and it can be regrown after a period of time.
The problem can be due to stress conditions, poor diet, certain types of drugs and surgery can be one of the reasons of temporary hair loss.
The hair starts regrowing and the hair follicles is stimulated for the growth of hair and it takes 3 to 6 months by the hair to grow.
So, after treatment, proper diet and medication Olivia will have her hair back.