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Biology, 20.08.2019 15:00 21schraderlily

The theory of continental drift was proposed by alfred wegner based on what observation?
a. he noticed the continents were in motion.
b. he observed volcanoes were creating new crust.
c. he observed earth's average temperature increasing.
d. he saw that continent edges fit together like pieces of a jigsaw puzzle.

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The theory of continental drift was proposed by alfred wegner based on what observation?
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