Science Topics term usage 2007-12-05

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.)

79	global warming
73	earthquakes
63	volcanoes
58	geographic information systems (GIS)
33	earth structure
31	acid deposition
23	tectonic processes
19	climate change
17	earthquake occurrences
15	tsunamis
15	ground water
14	geologic history
14	desert ecosystems
14	benthic ecosystems
13	endangered species
13	health and disease
13	water resources
13	human impacts
13	erosion
12	animals
12	crust (earth)
12	water supply and demand
11	aquatic ecosystems
11	rocks and deposits
11	snow and ice cover
10	water chemistry
10	map coordinate systems
10	ground-water flow
10	mineral resources
9	landslides
9	global change
9	water quality
9	streamflow
9	floods
9	sediment transport
9	coastal zones
9	geologic structure
8	contamination and pollution
8	ground-water quality
8	energy resources

Science Topics term usage Wednesday, 2007-12-05