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• Topic Timeline (Yearly)

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