Science Topics term usage 2006-11-29

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.)

147	earthquakes
121	mineral deposit areas
108	volcanoes
61	geographic information systems (GIS)
51	earthquake occurrences
47	energy resources
32	geology
30	acid deposition
30	earth structure
27	tsunamis
26	water quality
26	contamination and pollution
25	geologic history
24	tectonic processes
22	geologic structure
22	landslides
20	mammals
19	erosion
19	hurricanes
18	endangered species
18	ecosystems
17	mineral resources
17	vertebrates
17	geochemistry
17	human impacts
17	desert ecosystems
16	ground water
16	rocks and deposits
16	oil resources
16	volcanic activity
16	animals
15	climate change
15	ground-water flow
15	plants (organisms)
15	invasive species
14	snow and ice cover
14	mine sites
14	marine geology
13	population and community ecology
13	water resources

Science Topics term usage Wednesday, 2006-11-29