Science Topics term usage 2007-12-09

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.)

51	geographic information systems (GIS)
30	oxygen content (water)
27	volcanoes
24	earthquakes
15	climate change
14	rocks and deposits
13	acid deposition
12	water circulation
10	geologic history
10	geologic structure
10	contamination and pollution
9	animals
9	erosion
9	earthquake occurrences
8	tsunamis
7	inner core (earth)
7	land use and land cover
7	maps and atlases
7	earth structure
6	abandoned mines and quarries
6	tectonic processes
6	desert ecosystems
6	endangered species
6	energy resources
6	information system design and development
6	global change
6	mineral resources
6	ground-water flow
5	map coordinate systems
5	plants (organisms)
5	floods
5	core (earth)
5	magnetic field (earth)
5	ground water
5	mineralogy
5	geology
4	storms
4	land subsidence
4	health and disease
4	coastal zones

Science Topics term usage Sunday, 2007-12-09