Answer:
B. To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.
C. Radiometric dating, which relies on the predictable decay of radioactive isotopes of carbon, uranium, potassium, and other elements, provides accurate age estimates for events back to the formation of Earth more than 4.5 billion years ago.
Explanation:
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The primary distinction between relative dating and radiometric dating is that relative dating is a method for determining the age of rock layers based on their relative depth.
Radiometric dating, on the other hand, is a way of determining the absolute age by using the decaying products of natural radioactive decay.
To calculate the age of a rock or fossil, researchers use a clock to determine when it was formed. To date ancient events, geologists usually employ radiometric dating methods, which are based on the natural radioactive decay of particular elements such as potassium and carbon, as trustworthy clocks.
Radiometric dating, which is based on the predictable decay of radioactive isotopes of carbon, uranium, potassium, and other elements, provides precise age estimates for events stretching back to the Earth's origin more than 4.5 billion years ago.
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