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• Topic Timeline (Yearly)

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