Science Topics term usage 2006-09-14

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.)

153	volcanoes
149	earthquakes
69	geographic information systems (GIS)
45	maps and atlases
40	earth structure
39	animals
38	DNA sequencing
37	tsunamis
36	energy resources
34	tectonic processes
34	earthquake occurrences
31	floods
30	water quality
29	mineral resources
29	acid deposition
28	climate change
28	droughts
26	contamination and pollution
26	endangered species
26	snow and ice cover
25	meteorites
25	storms
24	geologic history
24	ground water
24	water resources
24	land use and land cover
23	landslides
23	planetary bodies
22	rocks and deposits
21	fires
21	health and disease
21	human impacts
21	erosion
21	surface water (non-marine)
20	aerial photography
20	global change
19	invasive species
18	ocean characteristics
17	hurricanes
17	coastal zones

Science Topics term usage Thursday, 2006-09-14