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Earth changes. Forests change into deserts.


        Oceans change into mountains.
















                                                                                                                                                                                                                                    Photo: OLGA DANYLENKO/Shutterstock































                                                                                   Photo: ELZBIETA SEKOWSKA/Shutterstock













                                                                                                                                   Plants and animals change, too. All these



                                                                                                                                   changes are slow. Fossils tell us about them.








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                                                                                                                                                                                                                Photo: SERGEY NIVENS/Shutterstock
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