During the past 50 years, as atmospheric carbon dioxide levels have risen, scientists have made precise measurements of atmospheric temperature.
(atmospheric carbon dioxide levels; have risen; ) (scientists; have made; precise measurements of atmospheric temperature; T:During the past 50 years; T:as atmospheric carbon dioxide levels have risen)
atmospheric carbon dioxide levels scientists
have risen have made
precise measurements of atmospheric temperature T:During the past 50 years T:as atmospheric carbon dioxide levels have risen