Earth & Environmental Sciences
goethite
100%
rainfall
97%
soil
92%
hematite
91%
human evolution
81%
East Africa
69%
fossil
68%
lake basin
65%
museum
64%
fieldwork
62%
stone
52%
mineral
51%
climate
49%
geology
48%
iron
40%
magnetic property
36%
world
35%
research method
34%
laboratory research
33%
Earth science
33%
archaeology
33%
laboratory
32%
teaching
32%
anatomy
32%
archaeological site
31%
research project
29%
train
29%
school
27%
reflectance
26%
environmental change
26%
monsoon
25%
learning
25%
environmental conditions
24%
rain
23%
document
23%
measuring
20%
science
20%
ecosystem
18%
climate change
18%
history
17%
evaluation
14%
method
13%
analysis
8%
effect
7%