Science Topics term usage 2006-09-18

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.)

116	earthquakes
101	volcanoes
52	geographic information systems (GIS)
36	tectonic processes
35	water quality
34	earth structure
31	DNA sequencing
30	life sciences
28	habitat alteration
28	acid deposition
27	biodiversity
27	earthquake occurrences
25	geologic structure
25	animals
24	water properties
23	contamination and pollution
23	rocks and deposits
23	climate change
23	maps and atlases
22	streamflow
21	geologic history
21	water resources
21	aerial photography
20	droughts
20	precipitation (atmospheric)
20	landslides
19	floods
19	vegetation
18	health and disease
18	erosion
17	global change
17	plants (organisms)
17	tsunamis
17	meteorites
17	magnetic field (earth)
17	surface water (non-marine)
17	human impacts
16	ecosystems
16	gravitational field (earth)
15	energy resources

Science Topics term usage Monday, 2006-09-18