Answer :
6000 years old is the oldest evidence of life forms on the surface of the earth. Thus correct option (D).
A living thing, also spelled life-form or lifeform, includes things like plants (flora) and animals (fauna). Over five billion species, or more than 99% of all those that have ever existed on Earth, are thought to be extinct.
The only celestial body that is known to contain life is Earth. Extraterrestrial life in any form has never been found.
What is the importance of life forms?
Every living thing's primary goal is to survive. Even more significant than reproduction is this. Despite not reproducing, babies and grandparents are still alive. More than just transferring genes sustains life.
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