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Human Evolution And The Fossil Record
Beginning of paper
Scientists continue to debate the history of man. It is generally
agreed upon by the scientific community, however, that humans evolved from
lesser beings, and this essay will function to provide evidence to support this
claim. Several points will be outlined, including the general physical changes
that occurred between several key species on th ....
Middle of paper ....40. In the laboratory, the sample is reheated,
and since argon-40 is a gas, it is released. The ratio of argon-40 released to
potassium-40 still present allows for a date to be assigned to objects near the
sample. However, due to potassium's high half-life (1.3 billion years), it is
only useful as a dating technique for finds older than 500,000 .... |
Word count: 1751 |
Page count: 7 |
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