Two reasons:
1. cold winters
2. rocky soils (not good for growing plants)
The behavior of amir as he always bite his fingernails can be regarded as a example of Habit.
- Habit can be regarded as a learned behavior which later becomes reflexive with periods of time.
- This kind of behavior is been triggered as a result of a certain context. However there could be good and bad habit depending on the culture and society.
- For instance, going to bathroom to brush ones teeth after eating could later become an habit.
Therefore, option Habit can be referred to as learned behavior.
Learn more at: brainly.com/question/1641894?referrer=searchResults
So it would stay more controlled
