Science Topics term usage 2007-12-02

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.)

45	geographic information systems (GIS)
37	engineering geology
32	earthquakes
30	volcanoes
19	waste treatment and disposal
15	climate change
15	acid deposition
13	earth structure
12	geologic structure
11	ground-water flow
11	global warming
11	mineral resources
9	earthquake occurrences
9	desert ecosystems
9	animals
9	floods
9	tectonic processes
9	land use and land cover
8	droughts
8	ground water
8	rocks and deposits
8	water quality
7	health and disease
7	precipitation (atmospheric)
6	landslides
6	snow and ice cover
6	sciences
6	contamination and pollution
6	glaciation
6	impact cratering
6	core (earth)
5	global change
5	surface water (non-marine)
5	water supply and demand
5	North America
5	energy resources
5	hurricanes
5	earth characteristics
5	erosion
5	oil resources

Science Topics term usage Sunday, 2007-12-02