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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
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
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
Infestation
Pollution
Rain on Snow
Parasite
Glacier Change
Storm Surge
Cyclone / Hurricane
Thunderstorm
Eruption
Earthquake
Debris / Trash
Sea/Land Level Change
Sinkhole / Crater
Physical or Chemical Change
Tsunami
	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
Fisheries
Displacement
Sanitation
Agriculture
Livestock
Harvest Change
Forestry
Aquaculture
Burial Site
Water Management
Relocation
Radiation