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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012
Marine Mammals
Ocean / Sea
Invertebrates
Surface Waters / Wetlands
Insects
Weather
Birds
Land Mammals
Fish
Land
Plants / Kelp
Microbes
Reptiles
Arachnids
Atmosphere
Groundwater
Amphibians
	Unusual or Unexpected Event
	2010	2011	2012
Ice / Snow Change
Unusual Range / Sighting
Death / Die-off / Decline
Pollution
Seasonal Timing
Permafrost Change
Unusual Size / Abundance
Storm Surge
Parasite
Sea/Land Level Change
Physical or Chemical Change
Earthquake
Flooding / Draining
Tsunami
Extreme Wind
Erosion
Algal Bloom
Unusual Animal Behavior
Cyclone / Hurricane
Extreme Precipitation
Drought
Infestation
	Impact on Human Environment
	2010	2011	2012
Buildings
Food Security
Human Health
Economic Impact
Water Security
Sanitation
Air Quality
Cultural Impact
Radiation
Safety
Transportation
Agriculture
Sports / Recreation
Forestry