What is one of the reasons alfred wegener believed earth's continents once formed a single supercontinent?

One of the reasons that Alfred Wegener believed that Earth's continents once formed a single Super-continent because the continents were, and still are able to be fit together like a jigsaw puzzle with little to no overlaps or spaces between countries.

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he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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