酸化 さんか炭素 たんそ吸収 きゅうしゅう げんであれば
nisankatansono kyūshūgendeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 二酸化炭素の吸収源

1. If/when it is a carbon dioxide sink.; If/when it serves as a carbon dioxide sink.

Ba Conditional