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According to many scientists, which of these probably caused a major change in the composition of Earth's atmosphere? F the weathering of mountains G the appearance of amphibians H the breakup of the continent
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According to many scientists, which of these probably caused a major change in the composition of Earth's atmosphere? F the weathering of mountains G the appearance of amphibians H the breakup of the continent Pangaea J the appearance of photosynthetic organisms​

User MohammadHossein R
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J the appearance of photosynthetic organisms​

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