B. How can radiometric dating and relative dating be used together to date the age of a rock strata or an organism? C. How can radiometric dating and relative dating be used together to date the age of the Earth?​

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.

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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20: 5

explanation:

about 20% of the world's population lives in   southwest asia, but on less than 5% of the world's   land area.