What are some events that all of us have had in our lives? Ask the class "What are some events that all of us have had in our lives?" Make a list of 5 or 6 things on the board. Let’s organize these!
Earth’s geological timeline goes back 540 million years and gives us a picture, so to speak, of the history of our planet that we can read in the sediments found in rock layers, or strata. The ...
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