8. Most Recent Ice AgeMost Recent Ice Age
USGS pictureUSGS picture
9. Hyde ParkHyde Park
MastodonMastodon
Illinois State Geological SocietyIllinois State Geological Society
http://www.isgs.uiuc.edu/education/ice-http://www.isgs.uiuc.edu/education/ice-
age-res/images/mastodon.jpgage-res/images/mastodon.jpg