25.4 continental drit Flashcards

1
Q

what is continental drift

A

the process where continents (floating plate on top of the mantle) move over time

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2
Q

how much do they move

A

like a few centimeters per year

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3
Q

consequences of continental drift

A

1- alters habitats

2- allopatric speculation (geographical isolation)

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4
Q

pangea’s consequences

A

1- ocean basins became deeper, lowering sea level and drained shallow costal areas, killing marines animals
2- the continent was cold and dry (more severe environment than central asia)

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