Science Topics term usage 2006-11-30

This analysis excludes the activity of search-engine spiders, USGS users, and transactions resulting in errors.

(Table shows only the 40 most frequently chosen terms.)

119	earthquakes
111	volcanoes
55	ocean temperature
50	geographic information systems (GIS)
37	mineral deposit areas
34	earthquake occurrences
31	ground water
29	contamination and pollution
29	human impacts
29	tectonic processes
28	earth structure
23	acid deposition
22	tsunamis
22	energy resources
21	erosion
21	ecosystems
20	water use
20	rocks and deposits
19	oil resources
18	fires
18	endangered species
18	landslides
18	hurricanes
17	geologic structure
17	water supply and demand
17	mineral resources
17	water properties
16	desert ecosystems
16	hazards
15	water chemistry
15	geologic history
15	global warming
15	invasive species
14	climate change
14	animals
14	water quality
14	floods
14	wildlife
13	land use and land cover
12	magnetic field (earth)

Science Topics term usage Thursday, 2006-11-30