Answer:
catching old fish
Explanation:
The strategy that this fisher man can follow is to only catch old fish. He needs to maitain the "young fish" alive with the purpose of having the ones in the reproductive age for future catching. Fishing the ones which have passed this age will keep the tuna population size.
The ancient city of Harappa was considered to be advanced during its time due to multiple characteristics such as: the sheer size of the city (known today as urban); a large network of trade/commerce/transport technology and economy; accuracy of their measurement systems for length and mass; their use of measurements in architectural design, sewerage and drainage systems; innovative metallurgy techniques and manipulation of precious metals (lead, tin, bronze, copper).
I believe the answer is: Elections
In democratic countries, elections determine which representatives obtained the support of the people and which are not. through election, citizens could identify the representatives that advocated for similar value and principles as us and appoint them as the extension of our involvement during the legislation process.
Answer:
Very tough exams and assignments
The United States and the Soviet Union
