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	Natural Environment
	2020
Weather
Ocean / Sea
Marine Mammals
Land
Surface Waters / Wetlands
Land Mammals
Air
Birds
Fish
Invertebrates
Groundwater
Atmosphere
	Unusual or Unexpected Event
	2020
Ice / Snow Change
Extreme Precipitation
Extreme Temperature
Unusual Range / Sighting
Flooding / Draining
Death / Die-off / Decline
Landslide / Avalanche
Rain on Snow
Extreme Wind
Pathogen
Erosion
Storm Surge
Unusual Size / Abundance
Unusual Animal Behavior
Permafrost Change
Seasonal Timing
Thunderstorm
Fire
Algal Bloom
Deformity / Disease / Injury
Cyclone / Hurricane
Sea/Land Level Change
Eruption
	Impact on Human Environment
	2020
Safety
Transportation
Buildings
Economic Impact
Human Health
Sports / Recreation
Energy
Cultural Impact
Sanitation
Displacement
Pets
Food Security
Fisheries
Livestock
Relocation
Water Management
Forestry
Air Quality