Question

why are viruses considered at the borderline between living and non-living things?

Answer 1

Viruses are considered on theborderline of living and non livingbecause only when they are inside aliving cell do they fulfil the criteria of being regarded as living entities. Outside, they act as non livingentities

Answer 2

Viruses sometimes act as living things and sometimes act as non-living things. When they are inside any living cell they function like living thing but when they are not in any living cell,they act as non-living things.
This is the reason viruses are considered to be in the borderline