No branch is stronger than the other. This is because of the two types of checks and balances that are established. If one governmental branch became too strong, the other branches would be able to neutralize such through its given powers. The second type granted is embedded in the institution, in which each branch is secure against each other.
So that your teacher will understand you
During the cold war, the policy that discouraged attack by threatening nuclear war was known as "nuclear deterrence" since if both the USSR and the US were to fire these weapons at each other it would have led to unprecedented destruction.
Subsistence agriculture occurs when farmers grow food crops to meet the needs of themselves and their families. In subsistence agriculture, farm output is targeted to survival and is mostly for local requirements with little or no surplus.