Biology, 02.02.2020 19:46 malum2009

Scientists estimate that our earth is approximately 4 billion years old by looking at

1 point
a.
samples of dirt and clay from meteorite impact sites

b.
samples of fossils found in south america

c.
samples of rock from areas of earth believed to have undergone melting and the cooling

d.
samples of wooly mammoth hair from russia

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Scientists estimate that our earth is approximately 4 billion years old by looking at

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