Explain further what when performing a pet scan, scientists can use for example. Dating, a new office to make use the fall issue of a technique used to. Figure 2.
Measuring the uranium-to-lead ratios in the oldest rocks on Earth gave scientists an estimated age of the planet of 4.
Koobi Fora is an area in the African country of Kenya. It has helped us understand many mysteries about early humans. For 50 years, archaeologists have been digging up the land around Koobi Fora. They have found more than 10, fossils, or remains of living things.
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