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• Topic Timeline (Yearly)

	Natural Environment
	2018	2019	2020	2021	2022
Land
Weather
Surface Waters / Wetlands
Ocean / Sea
Plants / Kelp
Land Mammals
Air
Insects
Groundwater
Birds
Fish
Arachnids
Atmosphere
Invertebrates
Fungi
Microbes
Amphibians
Marine Mammals
Reptiles
	Unusual or Unexpected Event
	2018	2019	2020	2021	2022
Extreme Precipitation
Erosion
Ice / Snow Change
Landslide / Avalanche
Permafrost Change
Extreme Temperature
Flooding / Draining
Seasonal Timing
Fire
Unusual Range / Sighting
Extreme Wind
Death / Die-off / Decline
Drought
Storm Surge
Eruption
Earthquake
Pollution
Sinkhole / Crater
Unusual Size / Abundance
Glacier Change
Rain on Snow
Sea/Land Level Change
Tsunami
Thunderstorm
Unusual Animal Behavior
Infestation
Cyclone / Hurricane
Deformity / Disease / Injury
Debris / Trash
Physical or Chemical Change
Algal Bloom
Pathogen
	Impact on Human Environment
	2018	2019	2020	2021	2022
Buildings
Safety
Transportation
Human Health
Economic Impact
Sports / Recreation
Cultural Impact
Energy
Displacement
Agriculture
Sanitation
Air Quality
Food Security
Water Security
Livestock
Pets
Harvest Change
Burial Site
Forestry
Water Management
Fisheries
Relocation