Respuesta :

Answer:

Deoxygenation

Explanation:

This is when an oxygen atom is taken out of something, example when sand turns black in the mud flats.  The sand is being deoxygenated by the ghost shrimp.  Pulling oxygen from it.  

Answer: Reduction

Explanation: because it's the removal of an O if it were an addition of an O is would be Oxidation.