Earth & Environmental Sciences
atmosphere
28%
atmospheric composition
29%
carbon
40%
carbon cycle
23%
carbon isotope
67%
carbonate
15%
climate
38%
climate change
13%
coordination
22%
disturbance
16%
ecosystem
14%
effect
5%
experiment
9%
exposure
13%
feedback loop
29%
fieldwork
23%
geochemical cycle
34%
Gondwana
24%
isotopic composition
20%
laboratory
12%
land
13%
long-term trend
25%
mass extinction
55%
modeling
39%
organic carbon
55%
organic matter
31%
oxidation
15%
oxide
17%
Paleozoic
90%
parameter
8%
Phanerozoic
26%
phosphorus
17%
project
12%
pyrite
21%
rate
15%
removal
12%
school
21%
science
15%
student
100%
test
9%
thesis
25%
timescale
17%
trilobite
28%
weathering rate
30%