How did the building of granaries indicate that harappan civilization was economically strong?

Giving an address, such as "1000 elysian park avenue, los angeles, .ca, its an example of describing the

Seafood watch is a program that identifies sustainably harvested, ocean friendly seafood in order to

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?