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I believe the answer you're looking for is C: Melting.
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Earth's Second Atmosphere The second atmosphere, which was the first to stay with the planet, formed from volcanic outgassing and comet ices. This atmosphere had lots of water vapor, carbon dioxide, nitrogen, and methane but almost no oxygen.
The answer is TRUE
during the late 1800s there was an influx of chinese immigrants to the united states due to the gold rush
they were actually the first racial group to be targeted by law (chinese exclusion act)