Science Topics term usage 2008-01-17

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.)

57	geographic information systems (GIS)
50	earthquakes
49	volcanoes
35	invasive species
24	earthquake occurrences
21	earth structure
20	energy resources
19	geologic history
17	climate change
15	acid deposition
14	human impacts
14	land use and land cover
13	ichthyology
13	global warming
13	contamination and pollution
13	water quality
13	desert ecosystems
13	droughts
11	rocks and deposits
11	real-time monitoring and reporting
11	water properties
11	aerial photography
11	ocean characteristics
11	aquatic ecosystems
11	floods
10	hurricanes
10	drainage basins
10	pesticide and herbicide contamination
10	mineral resources
9	producers (organisms)
9	maps and atlases
9	water cycle
9	biogeography
9	life sciences
9	health and disease
9	coal resources
9	animals
8	wildlife
8	natural resource extraction
8	hazards

Science Topics term usage Thursday, 2008-01-17