Chemical techniques of relative dating

Results from different techniques, often measured in rival labs, continually confirm each other.

New discoveries have filled in the gaps, and shown us in unimaginable detail the shape of the great ‘tree of life’.

Darwin and his contemporaries could never have imagined the improvements in resolution of stratigraphy that have come since 1859, nor guessed what fossils were to be found in the southern continents, nor predicted the huge increase in the number of amateur and professional paleontologists worldwide.

Other critics, perhaps more familiar with the data, question certain aspects of the quality of the fossil record and of its dating.

These skeptics do not provide scientific evidence for their views.

These demonstrate that, of course, we do not know everything (and clearly never will), but we know enough.

Today, innovative techniques provide further confirmation and understanding of the history of life.

Multiple dating methods are usually required before dates are accepted.

In social sciences there are many key concepts and terms that are crucial for students to know and understand.

Fossils document the order of appearance of groups and they tell us about some of the amazing plants and animals that died out long ago.

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