Science Topics term usage 2006-10-21

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	earthquakes
42	volcanoes
37	metamorphic rocks
22	geographic information systems (GIS)
15	earthquake occurrences
12	ground water
12	earth structure
12	rocks and deposits
10	floods
9	volcanic activity
9	climate change
8	geologic history
8	core (earth)
7	earth characteristics
7	oil resources
7	water supply and demand
7	volcanic features
6	energy resources
6	tsunamis
6	magnetic field (earth)
6	sedimentary rocks
6	global change
6	geologic structure
6	consumers (organisms)
6	ocean characteristics
5	glaciation
5	contamination and pollution
5	mineral resources
5	tectonic processes
5	habitat alteration
5	igneous rocks
5	precipitation (atmospheric)
5	acid deposition
5	image collections
4	tundra ecosystems
4	geochemistry
4	runoff
4	global warming
4	crust (earth)
4	water use

Science Topics term usage Saturday, 2006-10-21