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Elza [17]
3 years ago
15

What are some questions scientists still have about endosymbiosis?

Social Studies
1 answer:
nika2105 [10]3 years ago
3 0
One of the question is When was <span>endosymbiosis made.
Endosymbiosis occured when a simple organism evolved into a much more complex organism.
After many researches, it is predicted that endosymbiosis started to happen ardound 1.5 billion years ago.</span>
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Answer:

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