Changes

An '''Ice Age''' is when the [[earth]]'s average [[temperature]] drops so much that [[glacier]]s extends into what we think of as [[temperate]] zones and sea levels recede due to the loss of water to the ice.   

An '''Ice Age''' is when the [[earth]]'s average [[temperature]] drops so much that [[glacier]]s extend into what we think of as [[temperate]] zones and sea levels recede due to the loss of water to the ice.   

== Secular Geology's Perspective ==

== Secular Geology's Perspective ==