1.

Every year thousands of Monarch butterflies make a journey from Canada and the United States to spend the winter in Mexico. A new generation makes the reverse journey as summer approaches the Northern Hemisphere. What is this process called?

Answer»

Every year thousands of Monarch butterflies make a journey from Canada and the United States to spend the winter in Mexico. A new generation makes the reverse journey as summer approaches the Northern Hemisphere. What is this process called?






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