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lubasha [3.4K]
3 years ago
13

For about how many years of geological time have humans existed on earth

Biology
1 answer:
Zielflug [23.3K]3 years ago
3 0
 The history of life on Earth began about 3.8 billion years agohumans have been around for a mere 0.004% of the Earth's history
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The diastolic blood pressure represents the?
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3 0
2 years ago
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5 0
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