Toward the end of the Permian, oxygen levels _______ due to the _______.

Name: Toward the end of the Permian, oxygen levels _______ due to the _______.
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The drying of lowland swamps caused a decrease in oxygen levels during the end of the Permian era. As the swamps dried up, the vegetation began to decompose, which consumed the available oxygen, leading to a decrease in atmospheric oxygen levels. This lack of oxygen likely contributed to the extinction event that occurred at the end of the Permian.

Toward the End of the Permian, Oxygen Levels _______ Due