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Select two reasons why the monarch butterfly migrates south each year.
Most monarch butterflies travel from Canada and the northern United States to Southern California or Mexico where the winter is warm. These fascinating creatures take a 2,000 mile journey south each year, beginning their journey in October. Butterflies can’t survive the cold winter, especially since their food source, nectar becomes scarce during the winter months. Butterflies live only a few months, so each butterfly migrates only once. During the trip back North, female monarchs lay eggs on the milkweed plants that grow along the way. The eggs hatch into tiny caterpillars who eat the milkweed and eventually attaches itself to a leaf, sheds its skin, forms a hard shell, and emerges as a full-grown monarch butterfly. The butterfly then flies north.
They migrate to get away from cold weather and to lay eggs