Question

After about how many years of formation of earth, life appeared on this planet?

(1) 50 billion years

(2) 500 billion years

(3) 50 million years

(4) 500 million years

Comments

Evolution,Origin of life

Answer 1

Ans: (4) 500 million years

Sol. The correct answer is option (4) as life appeared 500 million years after the formation of earth. i.e. almost 4 billion years back.

Answer 2

the ans is 4) 500 million years ago(half billion)

Comments

After 500M years of Earth formation not 500M years ago

Answer 3

500 million years

Answer 4

500 billion years back