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• Topic Timeline (Yearly)

	Natural Environment
	2019	2020	2021
Weather
Surface Waters / Wetlands
Ocean / Sea
Land
Land Mammals
Fish
Marine Mammals
Plants / Kelp
Birds
Insects
Invertebrates
Air
Groundwater
Arachnids
Microbes
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
Flooding / Draining
Seasonal Timing
Fire
Unusual Size / Abundance
Unusual Animal Behavior
Landslide / Avalanche
Extreme Wind
Permafrost Change
Drought
Pathogen
Erosion
Deformity / Disease / Injury
Algal Bloom
Pollution
Infestation
Rain on Snow
Parasite
Glacier Change
Storm Surge
Thunderstorm
Eruption
Cyclone / Hurricane
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
Air Quality
Energy
Water Security
Pets
Displacement
Fisheries
Sanitation
Agriculture
Livestock
Forestry
Harvest Change
Aquaculture
Burial Site
Radiation
Relocation
Water Management