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	Natural Environment
	2021
Ocean / Sea
Weather
Surface Waters / Wetlands
Fish
Land
Birds
Marine Mammals
Land Mammals
Air
Invertebrates
	Unusual or Unexpected Event
	2021
Ice / Snow Change
Death / Die-off / Decline
Extreme Precipitation
Unusual Range / Sighting
Extreme Temperature
Landslide / Avalanche
Deformity / Disease / Injury
Pathogen
Algal Bloom
Unusual Animal Behavior
Extreme Wind
Flooding / Draining
Pollution
Drought
Seasonal Timing
Rain on Snow
Unusual Size / Abundance
Infestation
Fire
Permafrost Change
Sinkhole / Crater
Erosion
Parasite
	Impact on Human Environment
	2021
Transportation
Safety
Buildings
Human Health
Sports / Recreation
Food Security
Pets
Economic Impact
Energy
Cultural Impact
Water Security
Displacement
Livestock
Fisheries
Sanitation
Air Quality
Forestry
Aquaculture
Agriculture
Harvest Change