Earth & Environmental Sciences
Pleistocene
56%
nitrate
53%
circumpolar current
47%
marine isotope stage
44%
nitrogen
43%
new record
43%
mixed layer
35%
diatom
32%
consumption
25%
polar front
23%
interglacial
18%
sediment
17%
sea ice
16%
assimilation
16%
transect
15%
isotope
13%
ice
12%
nutrient
11%
transition
11%
summer
10%
ocean
10%
test
7%
effect
4%
Arts & Humanities
Nitrogen
100%
Nitrate
96%
Isotopes
70%
Diatoms
55%
Sediment
47%
Last Glacial Maximum
31%
Layer
29%
Hypothesis Test
23%
Ocean
19%
Summer
17%
Agriculture & Biology
ice
74%
nitrates
61%
nitrogen
42%
isotopes
37%
Bacillariophyceae
24%
sediments
22%
sea ice
18%
oceans
13%
assimilation (physiology)
11%
summer
8%
nutrients
7%
testing
4%
Social Sciences
assimilation
36%
evidence
30%