A virus has a very simple composition. It has a protein sheath inside which there is a strand of DNA. A virus shows some properties akin to living organisms. However, unlike other organisms, they show some properties that are akin to non-living things. They can undergo crystallization and in that form, survive for billions of years. They can survive very high temperatures, freezing cold and ultra-violet radiation in space vacuum, in crystallized form.
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You have no doubt seen films or photographs of whales sending up impressive plumes of …