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Geography, 19.09.2019 09:00 mconcepcionmilp7rfkn

If a layer of sandstone lies on top of a layer of limestone in which a 300-million-year-old fossil is found, and there are no unconformities, the layer of sandstone must be
a. older than 300 million years
c. about 300 million years old
b. younger than 300 million years
d. older than 600 million years

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