Relative dating lesson
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You may now see our list and photos of women who are in your area and meet your preferences.Extinction of species is common; most of the species that have lived on the earth no longer exist.*Earth and Space Science: Fossils provide important evidence of how life and environmental conditions have changed.Specific rock formations are indicative of a particular type of environment existing when the rock was being formed.For example, most limestones represent marine environments, whereas, sandstones with ripple marks might indicate a shoreline habitat or a riverbed.
By correlating fossils from various parts of the world, scientists are able to give relative ages to particular strata. Relative dating tells scientists if a rock layer is "older" or "younger" than another.