Earth & Environmental Sciences
charcoal
100%
deforestation
70%
lignin
51%
timber
48%
sediment
47%
carbon isotope
46%
Roman era
43%
economics
42%
ceramics
42%
economic integration
39%
project
38%
tissue
35%
economic theory
34%
analysis
32%
gymnosperm
32%
pedestrian
28%
renewable resource
28%
angiosperm
28%
magnetometer
28%
industrial development
27%
sampling
27%
resource
27%
archaeological site
25%
fieldwork
24%
basin
24%
research program
24%
river
23%
satellite imagery
23%
inspection
22%
soil erosion
22%
continental shelf
22%
ship
21%
grass
20%
stable isotope
20%
economy
19%
society
18%
sedimentation
18%
watershed
17%
valley
16%
hydraulics
16%
land use
16%
remote sensing
15%
vegetation
14%
indicator
14%
laboratory
13%
test
9%
rate
8%
effect
5%
method
5%