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Fact: There have now been 76 roosts reported so far this fall. Last year there had been 159 roosts reported by October 2nd.
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Predict: Do you think there will be a smaller number of monarchs in Mexico this winter than last winter? Give reasons for your prediction.
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Look at More Data: This chart shows how many roosts were reported to the Journey North database in past years as of October 2nd. Record the size of the winter population each year from the graph.
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Predict
again!
Challenge: What questions will scientists be asking as they watch this season's migration? Work with a partner to write possible questions on the back of this sheet. What questions do you have? Add them to the list! |