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Radioactive isotopes are unstable and will decay. ... The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope.
A method of measuring time based on time at the prime meridian/ ... Title, legend, grid system, direction, scale ... If you wanted to draw a map for the purpose of telling time, how many degrees ...
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Explanation:
The Euphrates-Tigris Basin is shared between Turkey, Syria and Iraq, with Iran comprising parts of the Tigris basin. Since the 1960s, unilateral irrigation plans altering the flows of the rivers, coupled with political tensions between the countries, have strained relations in the basin.
Roughly 40% Hope this helps! :)
