Multiple choice

The span of human existence on Earth is?

  1. 0.005% of Earth's history

  2. 10% of Earth's history

  3. All of Earth's history

  4. 1% of Earth's history
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Given that the Earth is approximately 4.6 billion years old and modern humans have only existed for a few hundred thousand years, human history represents an incredibly tiny fraction of geologic time. This extremely brief duration equates to roughly 0.005% of the planet's total lifespan.

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