Photosynthesis
• Oxygen binds readily with iron to form iron oxide, a dense compound that settles through
water to form sediments. Early oceans had large quantities of iron dissolved in their waters.
Explain how the composition of Earth's systems would change as more oxygen became
available due to photosynthetic cyanobacteria. Use evidence from your model to support
your explanation
Answers: 2
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Photosynthesis
• Oxygen binds readily with iron to form iron oxide, a dense compound that settles t...
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