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• Topic Timeline (Yearly)

	Natural Environment
	2020
Weather
Land Mammals
Ocean / Sea
Land
Birds
Marine Mammals
Surface Waters / Wetlands
Plants / Kelp
Invertebrates
Microbes
Fish
Arachnids
Fungi
Insects
Amphibians
Groundwater
Air
	Unusual or Unexpected Event
	2020
Ice / Snow Change
Extreme Precipitation
Death / Die-off / Decline
Seasonal Timing
Extreme Temperature
Unusual Range / Sighting
Unusual Animal Behavior
Pathogen
Flooding / Draining
Landslide / Avalanche
Permafrost Change
Pollution
Rain on Snow
Extreme Wind
Sinkhole / Crater
Earthquake
Deformity / Disease / Injury
Algal Bloom
Storm Surge
	Impact on Human Environment
	2020
Safety
Buildings
Transportation
Sports / Recreation
Economic Impact
Human Health
Cultural Impact
Livestock
Food Security
Energy
Air Quality
Burial Site
Agriculture
Displacement
Sanitation
Water Security