Also, he said, ice cores have revealed carbon dioxide concentrations of the distant past that show that atmospheric carbon dioxide had increased about 30% over the Industrial Era (since 1750) compared to the relatively constant abundance that it had over the preceding 750 years of the past millennium.
(he; said; ice cores have revealed carbon dioxide concentrations of the distant past that show that atmospheric carbon dioxide had increased about 30% over the Industrial Era (since 1750) compared to the relatively constant abundance) (ice cores; have revealed; carbon dioxide concentrations of the distant past that show that atmospheric carbon dioxide had increased about 30% over the Industrial Era (since 1750) (carbon dioxide concentrations of the distant past; show; that atmospheric carbon dioxide had increased about 30% over the Industrial Era (since 1750) Context(carbon dioxide concentrations of the distant past show,List([39, 98))):(atmospheric carbon dioxide; had increased; about 30%; T:over the Industrial Era; T:since 1750) (the relatively constant abundance; had; T:over the preceding 750 years of the past millennium)
carbon dioxide concentrations of the distant past show,List([39, 98))
he ice cores carbon dioxide concentrations of the distant past atmospheric carbon dioxide the relatively constant abundance
said have revealed show had increased had
ice cores have revealed carbon dioxide concentrations of the distant past that show that atmospheric carbon dioxide had increased about 30% over the Industrial Era (since 1750) compared to the relatively constant abundance
carbon dioxide concentrations of the distant past that show that atmospheric carbon dioxide had increased about 30% over the Industrial Era (since 1750
that atmospheric carbon dioxide had increased about 30% over the Industrial Era (since 1750
about 30% T:over the Industrial Era T:since 1750
T:over the preceding 750 years of the past millennium