Week 32 - Fossil Evidence and Geological Time

Geological time intervals are useful since the eras give an indication to our past environment. The examination of fossils throughout the world give scientists a better idea about the type of flora and fauna available through time. The various changes in bygone eras indicate that there at times nature has been hindered by catastrophic events. An example of such an event was the mass extermination of the dinosaurs. By examining the past intervals scientists do get an insight into what to expect in the future.