The following paragraph is mixes up oxygen and hydrogen both in the isotopic notation and in the regular words, where the mistakes were italicized:
The two oxygen isotopes that are most commonly used in paleoclimate are oxygen 16 (16O), which is the which is the “lighter” oxygen isotope, and oxygen 18 (16O), which is the “heavier” oxygen isotope. The two hydrogen isotopes that are most commonly used in paleoclimate are hydrogen (H), which is the “lighter” oxygen isotope, and deuterium (D), which is the “heavier” oxygen isotope.
It should be changed to the following:
The two oxygen isotopes that are most commonly used in paleoclimate are oxygen 16 (16O), which is the which is the “lighter” oxygen isotope, and oxygen 18 (18O), which is the “heavier” oxygen isotope. The two hydrogen isotopes that are most commonly used in paleoclimate are hydrogen (H), which is the “lighter” hydrogen isotope, and deuterium (D), which is the “heavier” hydrogen isotope.
The following paragraph is mixes up oxygen and hydrogen both in the isotopic notation and in the regular words, where the mistakes were italicized:
It should be changed to the following: