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• Topic Timeline (Yearly)

	Natural Environment
	2019	2020	2021
Weather
Surface Waters / Wetlands
Ocean / Sea
Land
Marine Mammals
Land Mammals
Fish
Plants / Kelp
Birds
Insects
Invertebrates
Air
Groundwater
Microbes
Arachnids
Atmosphere
Fungi
Reptiles
Amphibians
	Unusual or Unexpected Event
	2019	2020	2021
Extreme Temperature
Unusual Range / Sighting
Death / Die-off / Decline
Ice / Snow Change
Extreme Precipitation
Seasonal Timing
Flooding / Draining
Fire
Unusual Size / Abundance
Unusual Animal Behavior
Landslide / Avalanche
Extreme Wind
Drought
Permafrost Change
Erosion
Deformity / Disease / Injury
Pathogen
Algal Bloom
Pollution
Infestation
Rain on Snow
Parasite
Thunderstorm
Storm Surge
Glacier Change
Cyclone / Hurricane
Eruption
Earthquake
Sea/Land Level Change
Debris / Trash
Sinkhole / Crater
Tsunami
Physical or Chemical Change
	Impact on Human Environment
	2019	2020	2021
Safety
Human Health
Buildings
Sports / Recreation
Transportation
Food Security
Economic Impact
Cultural Impact
Energy
Air Quality
Water Security
Pets
Displacement
Fisheries
Sanitation
Agriculture
Livestock
Harvest Change
Aquaculture
Forestry
Burial Site
Radiation
Relocation
Water Management