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