I don't understand how my science textbook can refer to viruses being 'non-living' whilst also stating that they invade organisms to 'survive'. Can anyone explain if and why this is correct?

its because doesn't need to consume any energy to survive. nor it is able to regulate its own temperature

answer; /// i believe that the correct answer is; ///a combination of the birth and death

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion