Science Topics term usage 2008-02-28

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.)

76	geographic information systems (GIS)
62	earthquakes
31	morphology (biological)
31	volcanoes
26	earthquake occurrences
19	acid deposition
18	earth structure
17	habitat alteration
16	mineral resources
16	desert ecosystems
15	climate change
15	contamination and pollution
14	plants (organisms)
14	endangered species
14	floods
14	geologic structure
13	global warming
13	water supply and demand
13	maps and atlases
13	energy resources
13	tectonic processes
12	animals
12	geologic history
12	droughts
12	hurricanes
11	erosion
11	fires
11	ground water
11	water resources
10	water quality
10	rocks and deposits
10	invasive species
10	oxygen content (water)
9	landslides
9	precipitation (atmospheric)
9	health and disease
9	real-time monitoring and reporting
9	snow and ice cover
9	human impacts
8	drainage basins

Science Topics term usage Thursday, 2008-02-28