Why are lists so heavily used in functional programming languages? What are list comprehensions? What languages support them? 36. Compare and contrast the support for lists in ML- and Lisp-family...

Why are lists so heavily used in functional programming languages? What are list comprehensions? What languages support them? 36. Compare and contrast the support for lists in ML- and Lisp-family languages. Explain the distinction between interactive and file-based I/O; between temporary and persistent files. What are some of the tradeoffs between supporting I/O in the language proper versus supporting it in libraries?