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• Topic Timeline (Yearly)

	Natural Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021
Ocean / Sea
Insects
Plants / Kelp
Fish
Land Mammals
Birds
Invertebrates
Marine Mammals
Surface Waters / Wetlands
Land
Weather
Microbes
Air
Groundwater
Reptiles
Arachnids
	Unusual or Unexpected Event
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021
Unusual Size / Abundance
Unusual Range / Sighting
Infestation
Death / Die-off / Decline
Algal Bloom
Pollution
Unusual Animal Behavior
Extreme Temperature
Seasonal Timing
Extreme Precipitation
Pathogen
Flooding / Draining
Permafrost Change
Fire
Deformity / Disease / Injury
Eruption
Ice / Snow Change
	Impact on Human Environment
	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021
Sports / Recreation
Human Health
Economic Impact
Food Security
Safety
Cultural Impact
Fisheries
Forestry
Buildings
Aquaculture
Pets
Agriculture
Air Quality
Harvest Change
Water Security
Transportation
Energy
Displacement
Sanitation