Question

Life originated about ______.

Options

• 4.6 billion years ago

• 3.8 billion years ago

• 3.8 million years ago

• 2.8 million years ago

Answer 1

Life originated about 3.8 billion years ago.

Explanation:

Life presumably originated in the ocean around 3.7 to 3.8 billion years ago during the Precambrian era. The first organisms were likely heterotrophic, anaerobic, and virus-like nucleoprotein structures evolving into primitive cellular life.