Earth's most recent glacial period ended about Response area years ago.

Question

The Great Oxygenation Event began about Response area years ago.

About Response area years ago carbon dioxide began increasing exponentially to unprecedented levels.

Answer 1

1. Earth's most recent glacial period ended about 11,700 years ago.

2. The Great Oxygenation Event began about 2.4 billion years ago.

3. About 250 years ago carbon dioxide began increasing exponentially to unprecedented levels, correlating with the onset of the Industrial Revolution.