from parts of organisms shells The evidence to how a fossil can be Model how a fossil can be that have not decayed leaves and support Darwin’s formed. formed. because one or more of the other artefacts theory. 4.6.3.1 conditions needed for sand Fossils decay are absent Discuss how fossils provide plaster of 4.6.3.2 Fossils are the evidence for evolution. when of the organism 4.6.3.4 of ‘remains’ are replaced by other organisms from materials as they decay many years ago, which are found in as preserved traces of rocks. organisms, eg footprints, burrows and rootlet traces. Scientists cannot be certain about Explain why scientists cannot how life began on be certain how life began on Earth because Earth. many early forms of Explain how fossils provide life were evidence for evolution. so few Consider theories of how life on traces remain. began. What traces there were have been destroyed by geological activity. Fossils show how much, or how little, organisms have changed over time.
4.6.3.1 4.6.3.2 4.6.3.4 The evidence to support Darwin’s theory. Fossils Fossils are the ‘remains’ of organisms from many years ago, which are found in rocks. Scientists cannot be certain about how life began on Earth because many early forms of life were so few traces remain. What traces there were have been destroyed by geological activity. Fossils show how much, or how little, organisms have changed over time. from parts of organisms that have not decayed because one or more of the conditions needed for decay are absent when of the organism are replaced by other materials as they decay as preserved traces of organisms, eg footprints, burrows and rootlet traces. Explain why scientists cannot be certain how life began on Earth. Explain how fossils provide evidence for evolution. how a fossil can be formed. Discuss how fossils provide evidence for evolution. Consider theories of how life on began. Model how a fossil can be formed. shells leaves and other artefacts sand plaster of