How much of the earth's land surface is covered by sedimentary rock?
75%
90%
50%
...
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Chemistry, 21.06.2019 16:30, lil3114
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Chemistry, 22.06.2019 05:00, foreignking02
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Chemistry, 22.06.2019 08:30, omoaye
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Chemistry, 22.06.2019 12:30, poopybutt541
Avariable that is not being directly tested during an experiment should be
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