noun
VERB + CARBON DIOXIDE
▪ absorb , take in
▪
Trees absorb ~ and produce oxygen.
▪ emit , give out ( BrE ), produce , release
▪ convert
▪ reduce , remove
CARBON DIOXIDE + NOUN
▪ emissions
▪ concentration , levels
▪ output , production
PHRASES
▪ a build-up of ~
▪ emissions of ~