Physics
It is more difficult to walk on ice than on a concrete road because

There is more friction between the ice and feer
None of these
Ice is soft when compared to concrete
There is very little friction between the ice and feet pressing it

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Physics
An integrated circuit is more advantages than a coventional circuit because

If a part of the integrated circuit fails the entire circuit is simply replaced
A faulty part of a conventional circuit may be difficult to locate and repair
All listed here
They make the electric equipments more reliable and easier for servicing

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