Atmospheric Co, at Mauna Loa Observatory Scripps Institution of Oceanography
380 NOAA Earth System Research Chboratory
380
PARTS PER MILLION
340
320
1960
1970
2000
2010
1980 1990
YEAR
The graph indicates what about the relationship between atmospheric carbon dioxide and time
A)
over time, the amount of atmospheric carbon dioxide increases
B)
over time, the amount of atmospheric carbon dioxide decreases
.
over time, the amount of atmospheric carbon dioxide stays the same
D)
over time, the amount of atmospheric carbon dioxide does not change