One of the most noticeable changes NOAA has measured in the Earth's atmosphere over the past 50 years is the consistent increase in carbon dioxide concentration.
(the most noticeable changes; has measured; in the Earth's atmosphere; T:over the past 50 years) (One of the most noticeable changes; is; the consistent increase in carbon dioxide concentration)
the most noticeable changes One of the most noticeable changes
has measured is
in the Earth's atmosphere T:over the past 50 years
the consistent increase in carbon dioxide concentration