< Page:The Outline of History Vol 1.djvu
This page has been proofread, but needs to be validated.
33
CHANGES IN THE WORLD'S CLIMATE
Diagram to Illustrate One Set of Causes, the Astronomical Variations, Which Make the Climate of the World Change Slowly but Continuously.
It does not change in regular periods. It fluctuates through vast ages. As the world's climate changes, life must change too or perish.
This article is issued from
Wikisource.
The text is licensed under Creative
Commons - Attribution - Sharealike.
Additional terms may apply for the media files.