Science Topics term usage 2007-11-14

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.)

138	earth history
103	earthquakes
74	geographic information systems (GIS)
48	volcanoes
42	earthquake occurrences
37	rocks and deposits
32	earth structure
31	geologic history
27	acid deposition
26	endangered species
26	animals
24	human impacts
24	real-time monitoring and reporting
23	climate change
22	mineral resources
22	land use and land cover
22	global warming
21	water quality
20	desert ecosystems
20	tectonic processes
20	energy resources
20	geology
19	water resources
19	aquatic ecosystems
19	plants (organisms)
19	hazards
18	earth characteristics
18	geochemistry
18	volcanic activity
18	cartography
18	water supply and demand
17	floods
17	oil resources
17	water properties
17	visualization methods
17	biodiversity
16	health and disease
16	grassland ecosystems
16	greenhouse effect
15	streamflow

Science Topics term usage Wednesday, 2007-11-14