What is life? What can be defined as living? What is the difference between adaption and deviation by mistake? Decrease in internal entropy?

Steven Hawkins once claimed that computer virus is a form of life. Is that true, or is it a proper discription of a possible life form?

What is life?

It can reproduce? Some ant cannot as they are born to work. It can response to the environment? Some chemicals can response to the environment? It can response to the environment with respect to its will? How can we account for “will”? Organic life form is the only possible life form? Why human being cannot be creator of a new life form-computer virus?