Why is the first one (A) correct?
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Chemistry, 21.06.2019 23:00
Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.
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Chemistry, 22.06.2019 18:30
When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device
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When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?
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