What were some solutions of the Indus Valley people for Environmental Problems?

What did the People of the Indus Valley do to solve these environmental problems:


1) Monsoons brought either too much rain or too little


2) The Indus River changed course


3) The flooding of the Indus river was unpredictable.





PLEASE HELP!|||hey, it's me whitney. um on page 46 it says that they built part of the city on mud-brick platforms to protect from flooding and a thick brick wall about three and a half miles long surrounded the Harappa city