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kozerog [31]
2 years ago
12

According to the model below, how long ago did the common ancestor of all the organisms on the

Biology
1 answer:
lapo4ka [179]2 years ago
6 0

<em><u>Answer</u></em>

<em><u>about 3.9 billion years ago</u></em>

<em><u>about 3.9 billion years agoThe most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago.</u></em>

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<h3 /><h3>What is tundra ecosystem?</h3>

Tundra ecosystems are treeless areas found in the Arctic and on mountain peaks where the climate is cold and windy and rainfall is scarce.

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