Questions

A shell is an interactive user interface to an operating system services that allows an user to enter commands as character strings or through a graphical user interface. The shell converts them to system calls to the OS or forks off a process to execute the command. System call results and other information from the OS are presented to the user through an interactive interface. Commonly used shells are sh,csh,ks etc.

No. Boiling water is not a chemical change. Because in this process it doesn't loss its properties. It just changes its state i.e, from liquid state to gaseous.

Hence, Boiling water is a Physiacl change and not a chemical change.

The decentralization system was recommended by Balwant Rai Mehta.

The Bantu were comprised of more than 500 ethnic groups of Africa for migrations. The Bantu were experts in the form of iron metallurgy. 

1.Limitations on the size of data. 

2.Most Microprocessors does not support floating-point operations. 

3.Over heating physically

4. Not bit addressable

The first step is to disarm and secure detainees when supervising detainee operations.