'This radioactive isotope is used to date rocks from 100 to 50,000 years old'
carbon-14
GEOLOGY: This radioactive isotope is used to date rocks from 100 to 50,000 years old
This radioactive isotope is used to date rocks from 100 to 50,000 years old
This radioactive isotope is used to date rocks from 100 to 50,000 years old
GEOLOGY
carbon-14
GEOLOGY