Will mark brainliest! : ) why do scientists study deuterium to determine the origins of water on earth? a. deuterium reacts with oxygen to form water just like hydrogen does. b. deuterium only comes from outside the planet. c. deuterium has a neutron in its nucleus, whereas hydrogen does not. d. deuterium is easier to study than ordinary hydrogen. explain your answer! : ) !

The scientist studies deuterium to determine the origins of the water on earth is because of the fact that deuterium reacts with oxygen to form water just like hydrogen does. And by its action, it is helpful in determining the origin of water because it has the capability of forming water when associated or when it is reacted with oxygen. The correct answer is letter a.

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