The discoloration is often purple.
Answer:
The risks of various pollution and infections increase with urban sprawl.
Urban sprawl can be described as a condition in which the people from urban area migrate to low residential areas due to which the city starts to expand more in size.
During urban sprawl, more water contamination is likely to be caused as the water available cannot support such a large number of migration. There is not proper sewage system due to which contamination arise and cause sickness in the people. Also, these areas have more pollution due to traffic jam situations which causes sickness.
as it carries the soil in new places when flood comes
The answer to your question is <span> It's a physical system that is not affected by any other system. They don't really exist, other than the universe.
You might incorrectly state that an object is space is isolated from everything else, and it does seem that way. It's still affected by gravitational fields, but negligibly.
However, you look at the universe which you define to be everything ever. There is nothing else that exists to interact with it, so it is an isolated system.</span>
