The word is'endoergic'( or endothermic if you prefer ).
2.
You obviously didn't understand the word'endoergic'( or at least the sentence containing it ).
3.
If, as I assume, transformation to a precipitable chemical is innately endoergic, I will have fully conceded that sequestration and / or passing the gas over flora or a more efficient converter ( in the future ) in an intelligently designed system should be given the higher attention . talk ) 04 : 17, 11 January 2010 ( UTC)
परिभाषा
(of a nuclear reaction) occurring with absorption of energy पर्याय: energy-absorbing,