Answer:
An oil rig can be a platform out at sea where oil is brought up from deep under the ground to the rig.

Alternatively OIL RIG can be a handy way to remember the effects of oxidation and reduction.

i.e Oxidation Is Loss. OIL
Reduction Is Gain RIG
First answer by ID1451496707. Last edit by ID1451496707. Question popularity: 2 [recommend question].