The earth tilts for different times of the year. During the summer Alaska is a lot closer to the sun than florida.
Explanation:
The St. Lawrence seaway helped because it was large enough to allow shipping transportation to the USA. Which allowed Canada and the USA to trade goods. The seaway extends from Montreal through the Welland Canal in Ontario, Canada, to the eastern portion of Lake Erie.
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Answer:
The answer is matriarchal.
Answer: The core produces heat in the center of the earth
