Physics & Astronomy
plates (tectonics)
100%
Mars (planet)
97%
sediments
69%
photosynthetically active radiation
67%
extrasolar planets
62%
chemical defense
39%
ultraviolet radiation
37%
Mars surface
33%
quartz
33%
mineralogy
28%
volcanology
27%
vegetation
26%
Earth surface
24%
mars
22%
rocks
18%
planets
17%
Raman spectroscopy
16%
examination
16%
signatures
15%
radiation
10%
Earth & Environmental Sciences
plate tectonics
62%
Mars
53%
planet
51%
detection
33%
photosynthetically active radiation
33%
ultraviolet radiation
32%
land
31%
refuge
30%
detritus
29%
chemical defense
21%
sediment
20%
quartz
20%
Raman spectroscopy
16%
volcanic rock
12%
mineralogy
12%
radiation
10%
vegetation
8%
Agriculture & Biology
tectonics
86%
autotrophs
49%
sediments
39%
quartz
34%
detritus
34%
photosynthetically active radiation
33%
ultraviolet radiation
25%
volcanic rocks
24%
mineralogy
21%
Raman spectroscopy
17%
chemical defenses
16%
vegetation
10%
methodology
7%