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16.07.2019 •
History
The time scale was first assembled using fossils and
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Ответ:
Relative and absolute dating.
Explanation:
The clues in rocks help scientists to know how Earth has changed. The geologic time scale was crated by scientists observed that classified and studied fossils from the oldest to the youngest sedimentary rock in what is called relative dating. After years of research they started to implement absolute dating, which consists on measuring the amounts of radioactive elements in rocks to determine the actual number of years old. The geologic time scale is divided into eons, eras, periods, and epochs.
Ответ:
People would have to work for their own food since there were few trading areas and certainly no grocery stores. They would have to build their own house and be alone from the rest of the world. There would be no schools, so their children would not be able to get a good education.
Explanation: