Science Topics term usage 2008-01-16

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.)

68	earthquakes
68	geographic information systems (GIS)
42	volcanoes
29	animals
23	ichthyology
18	nonvascular plants
17	earth structure
17	earthquake occurrences
16	acid deposition
15	contamination and pollution
14	climate change
14	health and disease
14	energy resources
13	maps and atlases
13	mineral resources
13	tectonic processes
13	rocks and deposits
13	ecosystems
13	ground water
12	erosion
12	human impacts
11	endangered species
11	water quality
11	stream-gage measurement
11	oil resources
11	precipitation (atmospheric)
10	water chemistry
10	plants (organisms)
10	global warming
10	earth characteristics
10	geologic history
10	invasive species
10	desert ecosystems
9	land surface characteristics
9	floods
9	social sciences
9	impact cratering
9	land use and land cover
9	ocean characteristics
9	sediment transport

Science Topics term usage Wednesday, 2008-01-16