Environment & Ecology · Environmental Science
Based on geological evidence such as isotopic ratios in ancient zircons, the evidence for the existence of Earth's early liquid oceans pertains to approximately which period?
- 1~ 2.5 × 109 years ago
- 2~ 3.8 × 109 years ago
- 3~ 4.3 × 109 years ago✓
- 4~ 4.8 × 109 years ago
Correct answer
~ 4.3 × 109 years ago
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