Which event occurred during the Mesozoic era? The first plants lived on the land.

Pangaea, the super continent, began to break apart.

Cyanobacteria begin to fill the air and water with oxygen.

Humans lived on Earth.

The correct answer is the second choice.

(Pangaea, the super continent, began to break apart.)

Explanation:

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answer; /// i believe the correct answer is general act charters;