drag the item to the correct location.

Question

earths most recent glacial period ended about _ years ago.
the great oxygenation event began about _ years ago.
about _ years ago dioxide began increasing exponentially to unprecedented levels.
a. 2.3 billion years ago
b. 11,500 years ago
c. 160 years ago

Answer 1

Here are the items matched with their correct locations:

• Earth's most recent glacial period ended about b. 11,500 years ago.
• The Great Oxygenation Event began about a. 2.3 billion years ago.
• About c. 160 years ago carbon dioxide began increasing exponentially to unprecedented levels.