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How much of the earths oxygen is generated by marine organisms?
A. 50%
...
![Biology](/tpl/images/cats/biologiya.png)
Biology, 03.09.2020 03:01, jobrains3220
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How much of the earths oxygen is generated by marine organisms?
A. 50%
B. 25%
C. 90%
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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