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	Natural Environment
	2020
Weather
Surface Waters / Wetlands
Land
Ocean / Sea
Land Mammals
Marine Mammals
Plants / Kelp
Insects
Fish
Birds
Air
Invertebrates
Groundwater
Atmosphere
Reptiles
Arachnids
Fungi
Amphibians
Microbes
	Unusual or Unexpected Event
	2020
Unusual Range / Sighting
Extreme Temperature
Death / Die-off / Decline
Extreme Precipitation
Flooding / Draining
Unusual Size / Abundance
Ice / Snow Change
Permafrost Change
Fire
Seasonal Timing
Landslide / Avalanche
Pollution
Pathogen
Extreme Wind
Unusual Animal Behavior
Deformity / Disease / Injury
Infestation
Algal Bloom
Parasite
Glacier Change
Erosion
Thunderstorm
Rain on Snow
Debris / Trash
Storm Surge
Cyclone / Hurricane
Drought
Earthquake
Sinkhole / Crater
Tsunami
Sea/Land Level Change
	Impact on Human Environment
	2020
Safety
Buildings
Human Health
Sports / Recreation
Food Security
Economic Impact
Transportation
Air Quality
Cultural Impact
Fisheries
Water Security
Displacement
Forestry
Energy
Pets
Agriculture
Harvest Change
Livestock
Aquaculture
Radiation
Sanitation
Burial Site