Question

why are viruses considered as border line between living and non-living things?​

Answer 1

Explanation:

When viruses are outside the host, they are non living, that is, they are present only as protein coats, sometimes with a membrane.

When in the host, they become active and exist in various forms. They become alive and depend on the host for their survival.

Hence viruses considered as border line between living and non-living things

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Answer 2

viruses are considered at the borderline of living and non living because they show both the characteristics of a living and non living . As they react like non living in the free atmosphere but when they enter the body of living organism then they show the features of a living organism and start reproduction. some special features being a living are that DNA and RNA codes are present in them. some special features of being non living are that they do some functions like excretion and can't multiply by own.