Science Topics term usage 2008-02-18

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.)

49	earthquakes
40	geographic information systems (GIS)
29	volcanoes
20	ground water
20	food web
17	microwave imaging
17	earthquake occurrences
16	acid deposition
16	earth structure
15	human impacts
15	climate change
14	animals
13	precipitation (atmospheric)
12	floods
12	aquatic ecosystems
10	reports
10	health and disease
10	invasive species
10	contamination and pollution
10	rocks and deposits
10	erosion
9	tectonic processes
9	social sciences
9	land use change
9	maps and atlases
9	desert ecosystems
9	global warming
9	lakes
9	energy resources
8	surface water (non-marine)
8	water quality
8	ecology
8	ground-water flow
7	freshwater ecosystems
7	topics
7	gravitational field (earth)
7	marine biology
7	endangered species
7	geologic history
7	streamflow

Science Topics term usage Monday, 2008-02-18