Multiple choice general knowledge science & technology

How old are the oldest fossils on earth?

  1. About 3.8 billion years; they're bacteria-like organisms.

  2. About 1.8 billion years; they're bacteria-like organisms.

  3. About 4.8 billion years; they're bacteria-like organisms.

  4. About 2.8 billion years; they're bacteria-like organisms.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The oldest confirmed fossils are about 3.8 billion years old and are from bacteria-like organisms called stromatolites, found in Western Australia. Earth itself formed about 4.5 billion years ago, making 4.8 billion years impossible. 1.8 and 2.8 billion years are too recent for the earliest life.

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