Science Topics term usage 2006-09-20

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.)

78	volcanoes
72	earthquakes
52	geographic information systems (GIS)
42	surface water quality
32	water quality
30	animals
25	earth structure
23	specimen collecting
23	acid deposition
22	streamflow
22	outer core (earth)
22	tsunamis
22	human impacts
19	rocks and deposits
19	tectonic processes
17	ground water
16	mineral resources
16	maps and atlases
16	climate change
15	floods
14	earthquake occurrences
14	geologic history
14	health and disease
13	planetary bodies
13	water chemistry
13	field sampling
13	aerial photography
12	ecosystems
12	inner core (earth)
12	contamination and pollution
11	wildlife
11	topography
11	marine geology
11	wetland ecosystems
11	storms
11	endangered species
10	fires
10	landslides
10	plants (organisms)
10	ocean characteristics

Science Topics term usage Wednesday, 2006-09-20